Citazione Stile APA (7a Edizione)

Sebastian, A. M. (2020). Obligations and contracts (2024 edition.). Central Book Supply,Inc.

Citazione stile Chigago Style (17a edizione)

Sebastian, Avelino M.,Jr. Obligations and Contracts. 2024 edition. Quezon City: Central Book Supply,Inc, 2020.

Citatione MLA (9a ed.)

Sebastian, Avelino M.,Jr. Obligations and Contracts. 2024 edition. Central Book Supply,Inc, 2020.