Citazione Stile APA (7a Edizione)

Johnson, H. (1979). The principles of gardening: The classic guide to the gardeners art. Simon and Schuster.

Citazione stile Chigago Style (17a edizione)

Johnson, Hugh. The Principles of Gardening: The Classic Guide to the Gardeners Art. New York: Simon and Schuster, 1979.

Citatione MLA (9a ed.)

Johnson, Hugh. The Principles of Gardening: The Classic Guide to the Gardeners Art. Simon and Schuster, 1979.