Gaya APA
Collison , M. (1999).
A history of farming systems research .
Wallingford:
CABI Publishing.
Gaya Chicago
Collison , M.
A history of farming systems research.
Wallingford:
CABI Publishing,
1999.
Text.
Gaya MLA
Collison , M.
A history of farming systems research.
Wallingford:
CABI Publishing,
1999.
Text.
Gaya Turabian
Collison , M.
A history of farming systems research.
Wallingford:
CABI Publishing,
1999.
Print.