Cita APA (7a ed.)

Spence, I. (2003). Royal Horticultural Society garden plants and flowers. Dorling Kindersley.

Cita Chicago Style (17a ed.)

Spence, Ian. Royal Horticultural Society Garden Plants and Flowers. London: Dorling Kindersley, 2003.

Cita MLA (8a ed.)

Spence, Ian. Royal Horticultural Society Garden Plants and Flowers. Dorling Kindersley, 2003.