Cita APA (7a ed.)

Agpalo, R. E. (2008). Obligations and contracts. Rex Book Store.

Cita Chicago Style (17a ed.)

Agpalo, Ruben E. Obligations and Contracts. Manila: Rex Book Store, 2008.

Cita MLA (9a ed.)

Agpalo, Ruben E. Obligations and Contracts. Rex Book Store, 2008.