Zechmeister, E. B. (1997). A practical introduction to research methods in psychology (3rd. ed.). McGraw-Hill.
Chicago-čujuhus (17. p.)Zechmeister, Eugene B. A Practical Introduction to Research Methods in Psychology. 3rd. ed. New York: McGraw-Hill, 1997.
MLA-čujuhus (9. p.)Zechmeister, Eugene B. A Practical Introduction to Research Methods in Psychology. 3rd. ed. McGraw-Hill, 1997.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.