Gaya APA
Barkley, Andrew. (2016).
Principles of Agricultural .
New York:
Routledge.
Gaya Chicago
Barkley, Andrew.
Principles of Agricultural.
New York:
Routledge,
2016.
Text.
Gaya MLA
Barkley, Andrew.
Principles of Agricultural.
New York:
Routledge,
2016.
Text.
Gaya Turabian
Barkley, Andrew.
Principles of Agricultural.
New York:
Routledge,
2016.
Print.