APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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