Dooley, D. (2003). Social Research Methods (3rd ed.). Prentice-Hall of India Private Limited.
Cita Chicago (17th ed.)Dooley, David. Social Research Methods. 3rd ed. New Delhi: Prentice-Hall of India Private Limited, 2003.
Cita MLA (9th ed.)Dooley, David. Social Research Methods. 3rd ed. Prentice-Hall of India Private Limited, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.