APA (7th ed.) Citation

COMBER, Barkman, & Stuart-Smith. (2001). Orchids of Sumatra. Natural History Pub..

Chicago Style (17th ed.) Citation

COMBER, Barkman, and Stuart-Smith. Orchids of Sumatra. Kota Kinabalu, Sabah: Natural History Pub., 2001.

MLA (9th ed.) Citation

COMBER, et al. Orchids of Sumatra. Natural History Pub., 2001.