APA (7th ed.) Citation

Lavarack, P. S., & Gray, B. (1985). Tropical orchids of Australia (1. publ.). Nelson.

Chicago Style (17th ed.) Citation

Lavarack, Peter S., and Bruce Gray. Tropical Orchids of Australia. 1. publ. Melbourne: Nelson, 1985.

MLA (9th ed.) Citation

Lavarack, Peter S., and Bruce Gray. Tropical Orchids of Australia. 1. publ. Nelson, 1985.