APA (7th ed.) Citation

Lancaster. (1997). What perennial where. Dorling Kindersley.

Chicago Style (17th ed.) Citation

Lancaster. What Perennial Where. London: Dorling Kindersley, 1997.

MLA (8th ed.) Citation

Lancaster. What Perennial Where. Dorling Kindersley, 1997.

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