Cita APA (7th ed.)

Philbrick, J. H., & Philbrick, H. (1971). Organic gardening for health and nutrition: An introduction to the method of bio-dynamic gardening inaugurated by Rudolf Steiner. Castle Books.

Cita Chicago (17th ed.)

Philbrick, John H., i Helen Philbrick. Organic Gardening for Health and Nutrition: An Introduction to the Method of Bio-dynamic Gardening Inaugurated by Rudolf Steiner. New York: Castle Books, 1971.

Cita MLA (8th ed.)

Philbrick, John H., i Helen Philbrick. Organic Gardening for Health and Nutrition: An Introduction to the Method of Bio-dynamic Gardening Inaugurated by Rudolf Steiner. Castle Books, 1971.