APA (7th ed.) Citation

Forbes, S. A., & Richardson, R. E. (1919). Maps showing distribution of Illinois fishes to accompany a report on the fishes of Illinois (2nd ed.). State of Illinois.

Chicago Style (17th ed.) Citation

Forbes, Stephen Alfred, and Robert Earl Richardson. Maps Showing Distribution of Illinois Fishes to Accompany a Report on the Fishes of Illinois. 2nd ed. Springfield, Ill.: State of Illinois, 1919.

MLA (9th ed.) Citation

Forbes, Stephen Alfred, and Robert Earl Richardson. Maps Showing Distribution of Illinois Fishes to Accompany a Report on the Fishes of Illinois. 2nd ed. State of Illinois, 1919.