Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Philbrick, John H., και 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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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