Citazione Stile APA (7a Edizione)

Torres, J. P. (1981). Obligations and contracts: With introduction to law (8th ed.). Booksellers.

Citazione stile Chigago Style (17a edizione)

Torres, Justo P. Obligations and Contracts: With Introduction to Law. 8th ed. Manila: Booksellers, 1981.

Citatione MLA (9a ed.)

Torres, Justo P. Obligations and Contracts: With Introduction to Law. 8th ed. Booksellers, 1981.