APA (7th ed.) Citation

Harrington, T. C., & Cobb, F. W. (1988). Leptographium root diseases on conifers. APS Press.

Chicago Style (17th ed.) Citation

Harrington, T. C., and F. W. Cobb. Leptographium Root Diseases on Conifers. St. Paul, Minn.: APS Press, 1988.

MLA (9th ed.) Citation

Harrington, T. C., and F. W. Cobb. Leptographium Root Diseases on Conifers. APS Press, 1988.