Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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