Cita APA (7a ed.)

Christopher, E. P. (1958). Introductory horticulture. McGraw-Hill book.

Cita Chicago Style (17a ed.)

Christopher, Everett Percy. Introductory Horticulture. New York: McGraw-Hill book, 1958.

Cita MLA (8a ed.)

Christopher, Everett Percy. Introductory Horticulture. McGraw-Hill book, 1958.