Gaya APA

Sprinthall, N, A, S, R, A., Haryoatmanto, . (1990). Educational psychology . [Singapore]: Mc Graw-Hill.

Gaya MLA

Sprinthall, Norman, A., Sprinthall;, Richard, A.., Haryoatmanto, . "Educational psychology". [Singapore]: Mc Graw-Hill, 1990. Text.