APA (7th ed.) Citation

Armstrong, E. a., Armstrong, E. a., & (curator), I. S. U. S. C. a. U. A. (1991). Field reports form for submitting seasonal observations of Iowa birds, Eloise Armstrong and Eugene Armstrong, fall 1991.

Chicago Style (17th ed.) Citation

Armstrong, Eloiseet al, Eugeneet al Armstrong, and Iowa State University. Special Collections and University Archives (curator). Field Reports Form for Submitting Seasonal Observations of Iowa Birds, Eloise Armstrong and Eugene Armstrong, Fall 1991. 1991.

MLA (9th ed.) Citation

Armstrong, Eloiseet al, et al. Field Reports Form for Submitting Seasonal Observations of Iowa Birds, Eloise Armstrong and Eugene Armstrong, Fall 1991. 1991.