APA (7 वां संस्करण) प्रशस्ति पत्र

Padilla, A. B. (1953). Obligations and contracts. (Arts. 1156-1430; 2010-2027; 2142-2175, Republic Act No. 386). [P. C. F. Pub.].

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Padilla, Ambrosio Bibby. Obligations and Contracts. (Arts. 1156-1430; 2010-2027; 2142-2175, Republic Act No. 386). Manila: [P. C. F. Pub.], 1953.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Padilla, Ambrosio Bibby. Obligations and Contracts. (Arts. 1156-1430; 2010-2027; 2142-2175, Republic Act No. 386). [P. C. F. Pub.], 1953.