Gaya APA

Hopkins, K, D., Stanley, J, C. (1981). Educational and psychological measurement and evaluation (6th ed). Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Hopkins, Kenneth, D.., Stanley, Julian, C.. "Educational and psychological measurement and evaluation". 6th ed Englewood Cliffs, NJ: Prentice Hall, 1981. Text.