APA (7th ed.) Citation

Black, G. a., (curator), I. S. U. S. C. a. U. A., & Halmi, N. S. (1977). Gladys Black letter to Nicholas S. Halmi regarding bird counts, February 23, 1977.

Chicago Style (17th ed.) Citation

Black, Gladyset al, Iowa State University. Special Collections and University Archives (curator), and Nicholas S. Halmi. Gladys Black Letter to Nicholas S. Halmi Regarding Bird Counts, February 23, 1977. 1977.

MLA (9th ed.) Citation

Black, Gladyset al, et al. Gladys Black Letter to Nicholas S. Halmi Regarding Bird Counts, February 23, 1977. 1977.