APA (7th ed.) Citation

Wolverton, B. C. (1997). Eco-friendly houseplants: 50 indoor plants that purify the air. Phoenix Illustrated.

Chicago Style (17th ed.) Citation

Wolverton, B. C. Eco-friendly Houseplants: 50 Indoor Plants That Purify the Air. London: Phoenix Illustrated, 1997.

MLA (9th ed.) Citation

Wolverton, B. C. Eco-friendly Houseplants: 50 Indoor Plants That Purify the Air. Phoenix Illustrated, 1997.

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