APA (7th ed.) Citation

Kolbe, C. M., & Luedke, M. W. (1993). A guide to freshwater ecology. Texas Natural Resource Conservation Commission.

Chicago Style (17th ed.) Citation

Kolbe, Christine M., and Mark W. Luedke. A Guide to Freshwater Ecology. Austin, Tex.: Texas Natural Resource Conservation Commission, 1993.

MLA (9th ed.) Citation

Kolbe, Christine M., and Mark W. Luedke. A Guide to Freshwater Ecology. Texas Natural Resource Conservation Commission, 1993.