Παραπομπή σε μορφή APA (7η εκδ.)

Schwenke, K. (1991). Successful small-scale farming: An organic approach (2nd ed.). Storey Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schwenke, Karl. Successful Small-scale Farming: An Organic Approach. 2nd ed. Pownal: Storey Publishing, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Schwenke, Karl. Successful Small-scale Farming: An Organic Approach. 2nd ed. Storey Publishing, 1991.