Gaya APA
Bingham, Robert C. (1978).
Economics (7th. ed).
London:
McGraw-Hill Book Company, INC.
Gaya Chicago
Bingham, Robert C.
Economics.
7th. ed
London:
McGraw-Hill Book Company, INC,
1978.
.
Gaya MLA
Bingham, Robert C.
Economics.
7th. ed
London:
McGraw-Hill Book Company, INC,
1978.
.
Gaya Turabian
Bingham, Robert C.
Economics.
7th. ed
London:
McGraw-Hill Book Company, INC,
1978.
.