Gaya APA

Sprinthall, N, A., Sprinthall, R, C. (1990). Educational psychology : a developmental approach (5th ed). New York: McGraw-Hill.

Gaya MLA

Sprinthall, Norman, A.., Sprinthall, Richard, C.. "Educational psychology : a developmental approach". 5th ed New York: McGraw-Hill, 1990. Text.