Gaya APA
Gagne, R, M, ..
(2005).
Principles of instructional design
(
5th. Ed.)
.
Singapore:
Wadsworth Pub.
Gaya MLA
Gagne, Robert, M., ...[et.al].
"Principles of instructional design".
5th. Ed.
Singapore:
Wadsworth Pub,
2005.
Text.