Penggayaan APA
ESSEFF, Peter J.. (1974).
Learning hierarchies and modules .
Maryland:
Wilde Lake Village Green.
Chicago Style
ESSEFF, Peter J..
Learning hierarchies and modules.
Maryland:
Wilde Lake Village Green,
1974.
Text.
MLA Style
ESSEFF, Peter J..
Learning hierarchies and modules.
Maryland:
Wilde Lake Village Green,
1974.
Text.
Turabian Style
ESSEFF, Peter J..
Learning hierarchies and modules.
Maryland:
Wilde Lake Village Green,
1974.
Print.