In APA format, the title refers to the title of the work being cited. Titles fall into two categories:
Here are some general guidelines for formatting titles in APA format references (for more detailed guidelines, see APA Manual Ch. 9):
From APA Publication Manual, 7th, ed., Ch. 9.18 Definition of Title & 9.19 Format of the Title Element
Book:
Garton, A. (2005). Exploring cognitive development: The child as problem solver. Blackwell.
Journal article:
Tenhunen, J. J. (2009). In death, truth lies: Why do patients with sepsis die? Anesthesia and Analgesia, 108, 1731-1733.
Article in a newspaper:
Altman, L. K. (2009, August 5). New strain of H.I.V. is discovered. The New York Times, p. A6.