Carruthers, I. (1985). Tools for agriculture: A buyer's guide to low cost agricultural implements (3rd ed.). Intermediate Technology Publications Ltd.
Chicago Style (17. basım) AtıfCarruthers, Ian. Tools for Agriculture: A Buyer's Guide to Low Cost Agricultural Implements. 3rd ed. London: Intermediate Technology Publications Ltd, 1985.
MLA (8th ed.) AtıfCarruthers, Ian. Tools for Agriculture: A Buyer's Guide to Low Cost Agricultural Implements. 3rd ed. Intermediate Technology Publications Ltd, 1985.
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