APA (7th ed.) Citation

Weldon, L. W., Blackburn, R. D., & Harrison, D. S. (1973). Common aquatic weeds. Dover Publications.

Chicago Style (17th ed.) Citation

Weldon, Lyle W., R. D. Blackburn, and D. S. Harrison. Common Aquatic Weeds. New York: Dover Publications, 1973.

MLA (9th ed.) Citation

Weldon, Lyle W., et al. Common Aquatic Weeds. Dover Publications, 1973.