APA (7th ed.) Citation

Caskey, B. J., Justus, B. G., & Zappia, H. (2002). Occurrence of invertebrates at 38 stream sites in the Mississippi embayment study unit, 1996-99. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Caskey, B. J., B. G. Justus, and Humbert Zappia. Occurrence of Invertebrates at 38 Stream Sites in the Mississippi Embayment Study Unit, 1996-99. Pearl, Miss.: U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Caskey, B. J., et al. Occurrence of Invertebrates at 38 Stream Sites in the Mississippi Embayment Study Unit, 1996-99. U.S. Geological Survey, 2002.