APA-referens (7:e uppl.)

Pineda, E. L. (2000). Obligations and contracts. Central Professional Books.

Chicago-referens (17:e uppl.)

Pineda, Ernesto L. Obligations and Contracts. Quezon City: Central Professional Books, 2000.

MLA-referens (9:e uppl.)

Pineda, Ernesto L. Obligations and Contracts. Central Professional Books, 2000.