Citazione Stile APA (7a Edizione)

Laplana-Suarez, J. D., & Suarez, M. C. (2023). Obligations and contracts (2023 edition.). Central Book Supply, Inc.

Citazione stile Chigago Style (17a edizione)

Laplana-Suarez, Jane D., e Melvin C. Suarez. Obligations and Contracts. 2023 edition. Quezon City: Central Book Supply, Inc, 2023.

Citatione MLA (9a ed.)

Laplana-Suarez, Jane D., e Melvin C. Suarez. Obligations and Contracts. 2023 edition. Central Book Supply, Inc, 2023.