APA (7th ed.) Citation

HUXLEY, A. (1981). The Penguin encyclopedia of gardening. Penguin Books Ltd.

Chicago Style (17th ed.) Citation

HUXLEY, Anthony. The Penguin Encyclopedia of Gardening. Penguin Books Ltd, 1981.

MLA (8th ed.) Citation

HUXLEY, Anthony. The Penguin Encyclopedia of Gardening. Penguin Books Ltd, 1981.

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