Лингвофорум

Цитировать
Rules for Capitalization in Titles of Articles

If you have a look at the title of this article you will see that some letters are capitalized and some are not. Although the capitalization of titles can sometimes depend on the particular style of a writer, institution or publication, there are some general rules to keep in mind.
Style Guides

The rules for capitalizing titles not only of articles, but also books, papers, speeches, etc, can vary according to a particular style guide, such as Associated Press Stylebook (AP), Chicago Manual of Style, and MLA style. This is known as title case. While you will find similarities between each guide, it's important to pay attention to their differences.

Style guide similarities:

    In all three styles, always capitalize the first and last word of any title.
        How to Land Your Dream Job
    In all three styles, capitalize nouns, pronouns, verbs, adjectives, and adverbs.
        Visiting Beautiful Ruins (noun)
        As She Ran Away (pronoun)
        The Importance of Learning Fast (verb)
        The Poky Little Puppy (adjective)
        She Quietly Waits (adverb)
    In all three styles, do not capitalize articles, prepositions, or coordinating conjunctions.
        To Catch a Thief (article)
        One Year in Paris (preposition)
        Magic and Daybreak (coordinating conjunction)

Style guide differences:

    In the AP Stylebook, all words with three letters or less are lowercased. However, if any of those words are verbs (is, are, was, be), they are to be capitalized.
    In the Chicago Manual of Style, all prepositions are lowercased, even the lengthier ones (between, among, throughout).
    In MLA style, words with three letters or less are always lowercased.

So, which one should you choose? Well, it all depends if a certain style is required by your teacher, course, or subject/field. For example, MLA style is commonly used in the liberal arts or humanities. AP style is popularly used in journalism, Chicago is often used in business. A suggestion is to choose one style, or check to see what style is required by your teacher or editor, and stick to it.

Продолжение на http://grammar.yourdictionary.com/capitalization/rules-for-capitalization-in-titles.html

Традиция, восходящая еще к Какстону.

Цитата: From_Odessa от сентября 24, 2017, 10:49

Цитата: Lodur от сентября 24, 2017, 10:43
Не все. Союзы, предлоги, артикли и прочие частицы - с маленькой (ну, если они не в начале предложения, разумеется).

Мне казалось, что я встречал случаи, когда и служебные слова писались с заглавной буквы.

Я встречал и то, и другое. Как по правилам - не знаю.

Цитата: Lodur от сентября 24, 2017, 10:43
Не все. Союзы, предлоги, артикли и прочие частицы - с маленькой (ну, если они не в начале предложения, разумеется).

Мне казалось, что я встречал случаи, когда и служебные слова писались с заглавной буквы. Но, возможно, я ошибаюсь. Тогда вопрос несколько перефразируется, но суть остаётся.

Не все. Союзы, предлоги, артикли и прочие частицы - с маленькой (ну, если они не в начале предложения, разумеется).

Собственно, сабж.