Dooley, D. (1997). Social research methods (3rd ed.). Prentice Hall of India.
Chicago Stili AlıntıDooley, David. Social Research Methods. 3rd ed. New Delhi: Prentice Hall of India, 1997.
MLA AlıntıDooley, David. Social Research Methods. 3rd ed. Prentice Hall of India, 1997.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..