APA
The royal horticultural society, . (2003). A - Z encyclopedia of garden plants. London: Dorling Kindersley.
Chicago
The royal horticultural society, . 2003. A - Z encyclopedia of garden plants. London: Dorling Kindersley.
Harvard
The royal horticultural society, . (2003). A - Z encyclopedia of garden plants. London: Dorling Kindersley.
MLA
The royal horticultural society, . A - Z encyclopedia of garden plants. London: Dorling Kindersley. 2003.