APA (7th ed.) Citation

Piggott, A. G., & Piggott, C. J. (1988). Ferns of Malaysia in colour. Tropical Press.

Chicago Style (17th ed.) Citation

Piggott, A. G., and C. J. Piggott. Ferns of Malaysia in Colour. Kuala Lumpur: Tropical Press, 1988.

MLA (9th ed.) Citation

Piggott, A. G., and C. J. Piggott. Ferns of Malaysia in Colour. Tropical Press, 1988.