APA (7th ed.) Citation

Pfeiffer, E., & Heckel, F. (1938). Bio-dynamic farming and gardening: Soil fertility renewal and preservation. Anthroposophic Press; Rudoff Steiner Publishing Co..

Chicago Style (17th ed.) Citation

Pfeiffer, Ehrenfried, and Fredrick Heckel. Bio-dynamic Farming and Gardening: Soil Fertility Renewal and Preservation. New York : London: Anthroposophic Press; Rudoff Steiner Publishing Co., 1938.

MLA (9th ed.) Citation

Pfeiffer, Ehrenfried, and Fredrick Heckel. Bio-dynamic Farming and Gardening: Soil Fertility Renewal and Preservation. Anthroposophic Press; Rudoff Steiner Publishing Co., 1938.