APA (7th ed.) Citation

Harris, D. (1994). Hydroponics: The complete guide to gardening without soil. New Holland (Publishers) Ltd.

Chicago Style (17th ed.) Citation

Harris, Dudley. Hydroponics: The Complete Guide to Gardening Without Soil. London: New Holland (Publishers) Ltd, 1994.

MLA (9th ed.) Citation

Harris, Dudley. Hydroponics: The Complete Guide to Gardening Without Soil. New Holland (Publishers) Ltd, 1994.