Penggayaan APA
GROPPER, George L.. (1974).
Instructional strategies .
New Jersey:
Educational Technology Publications.
Chicago Style
GROPPER, George L..
Instructional strategies.
New Jersey:
Educational Technology Publications,
1974.
Buku.
MLA Style
GROPPER, George L..
Instructional strategies.
New Jersey:
Educational Technology Publications,
1974.
Buku.
Turabian Style
GROPPER, George L..
Instructional strategies.
New Jersey:
Educational Technology Publications,
1974.
Buku.