Citazione Stile APA (7a Edizione)

Bienz, D. (1993). The why and how of home horticulture (Second edition.). W.H. Freeman and Company.

Citazione stile Chigago Style (17a edizione)

Bienz, D.R. The Why and How of Home Horticulture. Second edition. New York, USA: W.H. Freeman and Company, 1993.

Citatione MLA (9a ed.)

Bienz, D.R. The Why and How of Home Horticulture. Second edition. W.H. Freeman and Company, 1993.