APA (7th ed.) Citation

Harris, D. (1994). The illustrated guide to hydroponics. New Holland Publishers.

Chicago Style (17th ed.) Citation

Harris, Dudley. The Illustrated Guide to Hydroponics. London: New Holland Publishers, 1994.

MLA (9th ed.) Citation

Harris, Dudley. The Illustrated Guide to Hydroponics. New Holland Publishers, 1994.

Warning: These citations may not always be 100% accurate.