Gaya APA
GUSTAFSON, K, L., BRANCH, R, M. (1997).
Survey of instructional development models (3rd ed.).
New York:
Clearinghouse of Information & Teknology.
Gaya MLA
GUSTAFSON, Kent, L.., BRANCH, Robert, Maribe.
"Survey of instructional development models".
3rd ed.
New York:
Clearinghouse of Information & Teknology,
1997.
Buku.