Gaya APA
Epp, Donald J.. (1981).
Introduction to agricultural economics (text).
New York:
McMillan Publishing.
Gaya Chicago
Epp, Donald J..
Introduction to agricultural economics.
text
New York:
McMillan Publishing,
1981.
.
Gaya MLA
Epp, Donald J..
Introduction to agricultural economics.
text
New York:
McMillan Publishing,
1981.
.
Gaya Turabian
Epp, Donald J..
Introduction to agricultural economics.
text
New York:
McMillan Publishing,
1981.
.