APA (7 ম সংস্করণ) উদ্ধৃতি

Singh, A. (1983). An introduction to the law of contract (2nd ed.). Eastern Book Company.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Singh, Avtar. An Introduction to the Law of Contract. 2nd ed. Lucknow: Eastern Book Company, 1983.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Singh, Avtar. An Introduction to the Law of Contract. 2nd ed. Eastern Book Company, 1983.