APA (7th ed.) Citation

Auld, B. A., Menz, K. M., & Tisdell, C. A. (1987). Weed control economics. Academic.

Chicago Style (17th ed.) Citation

Auld, B. A., K. M. Menz, and C. A. Tisdell. Weed Control Economics. London ; Orlando: Academic, 1987.

MLA (9th ed.) Citation

Auld, B. A., et al. Weed Control Economics. Academic, 1987.