APA (7th ed.) Citation

Yong, H. S. (1983). Malaysian butterflies: An introduction. Tropical Press.

Chicago Style (17th ed.) Citation

Yong, Hoi Sen. Malaysian Butterflies: An Introduction. Kuala Lumpur: Tropical Press, 1983.

MLA (9th ed.) Citation

Yong, Hoi Sen. Malaysian Butterflies: An Introduction. Tropical Press, 1983.