Gaya APA
Penson, Jhon B.. (2015).
Introduction to Agricultural Economics .
England:
Pearson Education.
Gaya Chicago
Penson, Jhon B..
Introduction to Agricultural Economics.
England:
Pearson Education,
2015.
Text.
Gaya MLA
Penson, Jhon B..
Introduction to Agricultural Economics.
England:
Pearson Education,
2015.
Text.
Gaya Turabian
Penson, Jhon B..
Introduction to Agricultural Economics.
England:
Pearson Education,
2015.
Print.