توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Singh, A. (1973). Law of contract (a study of the Contract Act, 1872) and specific relief (Twelfth edition.). Eastern Book Company.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Singh, Avtar. Law of Contract (a Study of the Contract Act, 1872) and Specific Relief. Twelfth edition. Lucknow: Eastern Book Company, 1973.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Singh, Avtar. Law of Contract (a Study of the Contract Act, 1872) and Specific Relief. Twelfth edition. Eastern Book Company, 1973.