Gaya APA
Olsbtain, F, D, E.
(1992).
Course Design
(
Cet.6)
.
Yoyakarta:
Cambridge University Press.
Gaya MLA
Olsbtain, Fraida, Dubin,, Elite.
"Course Design".
Cet.6
Yoyakarta:
Cambridge University Press,
1992.
Text.