APA (7th ed.) Citation

Holm, L. G. (1979). A Geographical atlas of world weeds. Wiley.

Chicago Style (17th ed.) Citation

Holm, LeRoy G. A Geographical Atlas of World Weeds. New York: Wiley, 1979.

MLA (9th ed.) Citation

Holm, LeRoy G. A Geographical Atlas of World Weeds. Wiley, 1979.