Cita APA (7th ed.)

Adams, C. R., & Early, M. P. (1993). Principles of horticulture. Butterworth-Heinemann.

Cita Chicago (17th ed.)

Adams, C. R., i M. P. Early. Principles of Horticulture. Oxford: Butterworth-Heinemann, 1993.

Cita MLA (9th ed.)

Adams, C. R., i M. P. Early. Principles of Horticulture. Butterworth-Heinemann, 1993.