Παραπομπή APA

Stonehouse, B. (1981). Biological husbandry A scientific approach to organic farming. Butter Worths.

Παραπομπή Chicago Style

Stonehouse, B. Biological Husbandry A Scientific Approach to Organic Farming. London: Butter Worths, 1981.

Παραπομπή MLA

Stonehouse, B. Biological Husbandry A Scientific Approach to Organic Farming. Butter Worths, 1981.