APA (7th ed.) Citation

Engebretsen, B. a., (curator), I. S. U. S. C. a. U. A., & Myers, R. K. (1988). Bery Engebretsen letter to Robert K. Myers regarding bird sightings, May 29, 1988.

Chicago Style (17th ed.) Citation

Engebretsen, Beryet al, Iowa State University. Special Collections and University Archives (curator), and Robert K. Myers. Bery Engebretsen Letter to Robert K. Myers Regarding Bird Sightings, May 29, 1988. 1988.

MLA (9th ed.) Citation

Engebretsen, Beryet al, et al. Bery Engebretsen Letter to Robert K. Myers Regarding Bird Sightings, May 29, 1988. 1988.