Once you look over the requirements on the left, take a look at this example
APA Style is known as "down" style, meaning that words are lowercase unless there is specific guidance to capitalize them.
In titles, capitalize the following:
Keep lowercase:
Reports In-Text vs References Page:
When writing out report titles in-text, capitalize every major word.
When writing out report titles on the References page, use Title Case.
Example:
In-Text: In the report People With a Higher Risk of Food Poisoning, Centers for Disease Control and Prevention [CDC] (2019) mention adults aged 65 and older, children younger than 5 years, people with weakened immune systems, and pregnant women.
References:
Centers for Disease Control and Prevention. (2019, January 24). People with a higher risk of food poisoning. Department of Health and Human Services. https://www.cdc.gov/foodsafety/people-at-risk-food-poisoning.html