Penggayaan APA
HEILBRONER, ROBERT L, THUROW, L.C. (1981).
The economics problem .
Englewood Cliffs:
Pretice Hall Inc.
Chicago Style
HEILBRONER, ROBERT L, THUROW, L.C.
The economics problem.
Englewood Cliffs:
Pretice Hall Inc,
1981.
Text.
MLA Style
HEILBRONER, ROBERT L, THUROW, L.C.
The economics problem.
Englewood Cliffs:
Pretice Hall Inc,
1981.
Text.
Turabian Style
HEILBRONER, ROBERT L, THUROW, L.C.
The economics problem.
Englewood Cliffs:
Pretice Hall Inc,
1981.
Print.