APA (7th ed.) Citation

Zohary, M., Heyn, C. C., & Heller, D. (1980). Conspectus florae orientalis: An annotated catalogue of the flora of the Middle East.

Chicago Style (17th ed.) Citation

Zohary, Michael, C. C. Heyn, and D. Heller. Conspectus Florae Orientalis: An Annotated Catalogue of the Flora of the Middle East. Jerusalem, 1980.

MLA (8th ed.) Citation

Zohary, Michael, et al. Conspectus Florae Orientalis: An Annotated Catalogue of the Flora of the Middle East. 1980.