APA Format
Winkel, W.S.
. (1991). Psikologi pengajaran. Jakarta : Grasindo
MLA Format
Winkel, W.S.
. Psikologi pengajaran. Jakarta : Grasindo, 1991
Australian/Harvard Format
Winkel, W.S.
. 1991. Psikologi pengajaran. Grasindo, Jakarta
Warning: These citations may not always be 100% accurate.