Cita APA (7a ed.)
Schwenke, K. Successful small-scale farming: An organic approach (2a edición.). Storey.
Cita estilo Chicago (17a ed.)
Schwenke, Karl. Successful Small-scale Farming: An Organic Approach. 2a edición. Pownal, EUA: Storey.
Cita MLA (9a ed.)
Schwenke, Karl. Successful Small-scale Farming: An Organic Approach. 2a edición. Storey.
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