Gaya APA
Kuhlman, John M.. (1972).
Studying economics (text).
California:
Goodyear Publishing Company.
Gaya Chicago
Kuhlman, John M..
Studying economics.
text
California:
Goodyear Publishing Company,
1972.
.
Gaya MLA
Kuhlman, John M..
Studying economics.
text
California:
Goodyear Publishing Company,
1972.
.
Gaya Turabian
Kuhlman, John M..
Studying economics.
text
California:
Goodyear Publishing Company,
1972.
.