APA

Brickell C., The Royal Horticultural Society (London), . (1994). Gardeners Encyclopedia of Plants and Flowers. London: Dorling Kindersley.

Chicago

Brickell Christopher, The Royal Horticultural Society (London), . 1994. Gardeners Encyclopedia of Plants and Flowers. London: Dorling Kindersley.

Harvard

Brickell C., The Royal Horticultural Society (London), . (1994). Gardeners Encyclopedia of Plants and Flowers. London: Dorling Kindersley.

MLA

Brickell Christopher, The Royal Horticultural Society (London), . Gardeners Encyclopedia of Plants and Flowers. London: Dorling Kindersley. 1994.