Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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