Gaya APA
NICHOLAS,Donald A.. (1971).
Principles of Economics .
New York:
Holt Rinehart And Winston.
Gaya Chicago
NICHOLAS,Donald A..
Principles of Economics.
New York:
Holt Rinehart And Winston,
1971.
Teks.
Gaya MLA
NICHOLAS,Donald A..
Principles of Economics.
New York:
Holt Rinehart And Winston,
1971.
Teks.
Gaya Turabian
NICHOLAS,Donald A..
Principles of Economics.
New York:
Holt Rinehart And Winston,
1971.
Teks.