APA (7th ed.) Citation

Preston-Mafham, R., & Preston-Mafham, K. (1988). Butterflies of the world. Blandford Press.

Chicago Style (17th ed.) Citation

Preston-Mafham, Rod, and Ken Preston-Mafham. Butterflies of the World. London: Blandford Press, 1988.

MLA (9th ed.) Citation

Preston-Mafham, Rod, and Ken Preston-Mafham. Butterflies of the World. Blandford Press, 1988.

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