APA (7th ed.) Citation

Preston-Mafham. (2007). 500 cacti: Species and varieties in cultivation. Firefly Books.

Chicago Style (17th ed.) Citation

Preston-Mafham. 500 Cacti: Species and Varieties in Cultivation. Richmond Hill, Ont: Firefly Books, 2007.

MLA (8th ed.) Citation

Preston-Mafham. 500 Cacti: Species and Varieties in Cultivation. Firefly Books, 2007.

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