Παραπομπή APA
Gulati, P. (1987). Social studies and population education,with revised model questions: (Model questions prepared by Directorate-General of employmentand training New Delhi),P.Gulati (2nd ed.). New Delhi: Tata McGraw-Hill pub.co..
Παραπομπή Chicago StyleGulati, P. Social Studies and Population Education,with Revised Model Questions: (Model Questions Prepared By Directorate-General of Employmentand Training New Delhi),P.Gulati. 2nd ed. New Delhi: Tata McGraw-Hill pub.co., 1987.
Παραπομπή MLAGulati, P. Social Studies and Population Education,with Revised Model Questions: (Model Questions Prepared By Directorate-General of Employmentand Training New Delhi),P.Gulati. 2nd ed. New Delhi: Tata McGraw-Hill pub.co., 1987.
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