McBcBurney, D. (2001). Research methods (5th ed.). Thomson Asia.
Cita Chicago (17th ed.)McBcBurney, Donald. Research Methods. 5th ed. Bangalore: Thomson Asia, 2001.
Cita MLA (8th ed.)McBcBurney, Donald. Research Methods. 5th ed. Thomson Asia, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.