In APA, you will not capitalize all the words in an article title. You will capitalize major words in the journal title, and words followed by a colon.
Example for the article "Color Pattern Variation in a Cryptic Amphibian: Anaxyrus fowleri" published in the Journal of Herpetology:
Rabbani, M., Zacharczenko, B., & Green, D. M. (2015). Color pattern variation in cryptic amphibian: Anaxyrus fowleri. Journal Of Herpetology,49(4), 649-654. doi:10.1670/14-114
For more in-depth help with citations, consult with your instructor or a writing tutor at the Academic Support Center.
