APA (7th ed.) Citation

Haugum, J., Low, A. M., & Wilson, D. (1978). A monograph of the birdwing butterflies: The systematics of Ornithoptera, Troides and related genera. Scandinavian Science Press.

Chicago Style (17th ed.) Citation

Haugum, J., A. M. Low, and D. Wilson. A Monograph of the Birdwing Butterflies: The Systematics of Ornithoptera, Troides and Related Genera. [Denmark]: Scandinavian Science Press, 1978.

MLA (9th ed.) Citation

Haugum, J., et al. A Monograph of the Birdwing Butterflies: The Systematics of Ornithoptera, Troides and Related Genera. Scandinavian Science Press, 1978.