Gaya APA
Ferguson, C.E.. (1965).
Principles of economics (text).
New York:
Holt Rinehart and Winston.
Gaya Chicago
Ferguson, C.E..
Principles of economics.
text
New York:
Holt Rinehart and Winston,
1965.
Tesis.
Gaya MLA
Ferguson, C.E..
Principles of economics.
text
New York:
Holt Rinehart and Winston,
1965.
Tesis.
Gaya Turabian
Ferguson, C.E..
Principles of economics.
text
New York:
Holt Rinehart and Winston,
1965.
Tesis.