Gaya APA
Drummond, Evan H., Goodwin , John W. (2004).
Agricultural economics (edisi -2).
London:
Pearson Education.
Gaya Chicago
Drummond, Evan H., Goodwin , John W.
Agricultural economics.
edisi -2
London:
Pearson Education,
2004.
Text.
Gaya MLA
Drummond, Evan H., Goodwin , John W.
Agricultural economics.
edisi -2
London:
Pearson Education,
2004.
Text.
Gaya Turabian
Drummond, Evan H., Goodwin , John W.
Agricultural economics.
edisi -2
London:
Pearson Education,
2004.
Print.