McBurney, D. H. (2001). Research methods (Fifth edition.). Cengage Learning.
Chicago (17e ed.) BronvermeldingMcBurney, Donald H. Research Methods. Fifth edition. Belmont, CA: Cengage Learning, 2001.
MLA (8e ed.) BronvermeldingMcBurney, Donald H. Research Methods. Fifth edition. Cengage Learning, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.