Cita APA (7th ed.)

Hessayon, D. G. (1990). The bio friendly gardening guide: Gardening with people, animals, and the environment in mind. PBI Publications.

Cita Chicago (17th ed.)

Hessayon, D. G. The Bio Friendly Gardening Guide: Gardening with People, Animals, and the Environment in Mind. Waltham Cross, Herts, England: PBI Publications, 1990.

Cita MLA (9th ed.)

Hessayon, D. G. The Bio Friendly Gardening Guide: Gardening with People, Animals, and the Environment in Mind. PBI Publications, 1990.