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 sightings of Snowy Owls and a Goshawk, February 25, 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 Sightings of Snowy Owls and a Goshawk, February 25, 1977. 1977.

MLA (9th ed.) Citation

Black, Gladyset al, et al. Gladys Black Letter to Nicholas S. Halmi Regarding Sightings of Snowy Owls and a Goshawk, February 25, 1977. 1977.