Citazione Stile APA (7a Edizione)

Philippines & Nolledo, J. N. (1980). The Philippine law on obligations and contracts explained (9th ed.). National Book Store.

Citazione stile Chigago Style (17a edizione)

Philippines e Jose N. Nolledo. The Philippine Law on Obligations and Contracts Explained. 9th ed. [Manila: National Book Store, 1980.

Citatione MLA (9a ed.)

Philippines e Jose N. Nolledo. The Philippine Law on Obligations and Contracts Explained. 9th ed. National Book Store, 1980.