APA-referens (7:e uppl.)

Groot, H. C. (2011). Peace Corps Alumni Foundation for Philippine Development. Bulletin of the American Historical Collection.

Chicago-referens (17:e uppl.)

Groot, Hans C. "Peace Corps Alumni Foundation for Philippine Development." Bulletin of the American Historical Collection 2011.

MLA-referens (9:e uppl.)

Groot, Hans C. "Peace Corps Alumni Foundation for Philippine Development." Bulletin of the American Historical Collection, 2011.