Question

When doing APA format 6th edition, do you capitalize proper nouns in a title or only the first word?

Answer 1

All proper nouns are capitalized in a title and in the text.

Explanation:

Refer to the APA Style guides:
http://blog.apastyle.org/apastyle/2012/03/how-to-capitalize-and-format-reference-titles-in-apa-style.html
https://owl.english.purdue.edu/owl/resource/560/05/