capitalization

[Allen165]

I have the following title in a paper I'm writing: Interventionism Versus Non-Interventionism.

I'm wondering whether the second "Interventionism" should be written in small letters: Interventionism Versus Non-interventionism.

Thanks.

[konungursvia]

I like it with four capitals.

[bhaisahab]

I like it with four capitals.

So do I.

[Raymott]

I have the following title in a paper I'm writing: Interventionism Versus Non-Interventionism.

I'm wondering whether the second "Interventionism" should be written in small letters: Interventionism Versus Non-interventionism.

Thanks.

I would write: Interventionism versus Non-Interventionism.
Function words are often not capitalized in titles.

[Allen165]

I would write: Interventionism versus Non-Interventionism.
Function words are often not capitalized in titles.

Prepositions of four or more letters should be capitalized.

Which Words in a Title Should Be Capitalized? - Title Case and Sentence Case -

[Raymott]

Prepositions of four or more letters should be capitalized.

Which Words in a Title Should Be Capitalized? - Title Case and Sentence Case -

That's from The Associated Press Stylebook.
There's no 'should' involved - you pick a style and stick to it. There's been a trend away from capitalizing every word in the last 30 odd years.

In a broader context, if you're writing an important article, you should be using a consistent style guide anyway (Yes, there is a should involved here). You would normally use the recommendations for titles as you would for the citations and references section. etc.

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The Chicago Manual of Style notes that "articles (a, an, the), coordinating conjunctions (and, but, or, for, nor), and prepositions, regardless of length, are lowercased unless they are the first or last word of the title."

Harvard Style:
Use minimal capitalization for the titles of books, book chapters and journal articles.
Bennett, J 2003, 'Environmental values and water policy', Australian Geographical Studies, vol. 41, no. 3, pp. 237-250
Harvard author-date style, Citing and referencing tutorial, Monash University Library

APA style
Parker, G., & Roy, K. (2001). Adolescent depression: A review. Australian and New Zealand Journal of Psychiatry, 35, 572-580.
How to Cite References - APA Style

[konungursvia]

I would write: Interventionism versus Non-Interventionism.
Function words are often not capitalized in titles.

That's a good point. We might also just use the short form:

vs