APA (7th ed.) Citation

Black, G. a., (curator), I. S. U. S. C. a. U. A., Halmi, N. S., Kanago, D., & Kanago, E. (1979). Gladys Black letter to Nicholas S. Halmi regarding winter bird sightings, February 9, 1979.

Chicago Style (17th ed.) Citation

Black, Gladyset al, Iowa State University. Special Collections and University Archives (curator), Nicholas S. Halmi, Dixie Kanago, and Eldon Kanago. Gladys Black Letter to Nicholas S. Halmi Regarding Winter Bird Sightings, February 9, 1979. 1979.

MLA (9th ed.) Citation

Black, Gladyset al, et al. Gladys Black Letter to Nicholas S. Halmi Regarding Winter Bird Sightings, February 9, 1979. 1979.