Penggayaan APA
ABRAHAM, Herbert J. (1973).
World problems in the classroom .
Paris:
Unesco.
Chicago Style
ABRAHAM, Herbert J.
World problems in the classroom.
Paris:
Unesco,
1973.
Buku.
MLA Style
ABRAHAM, Herbert J.
World problems in the classroom.
Paris:
Unesco,
1973.
Buku.
Turabian Style
ABRAHAM, Herbert J.
World problems in the classroom.
Paris:
Unesco,
1973.
Buku.