Dooley, D. (1997). Social research methods (3rd ed.). Prentice Hall of India.
Chicago Style aipamenaDooley, David. Social Research Methods. 3rd ed. New Delhi: Prentice Hall of India, 1997.
MLA aipamenaDooley, David. Social Research Methods. 3rd ed. Prentice Hall of India, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.