APA (7th ed.) Citation

Williams, R. D. a., (curator), I. S. U. S. C. a. U. A., & Probst, J. (1987). Randall D. Williams letter to Thomas H. Kent regarding a Snowy Owl sighting in Sioux City, November 26, 1987.

Chicago Style (17th ed.) Citation

Williams, Randall D.et al, Iowa State University. Special Collections and University Archives (curator), and Jerry Probst. Randall D. Williams Letter to Thomas H. Kent Regarding a Snowy Owl Sighting in Sioux City, November 26, 1987. 1987.

MLA (9th ed.) Citation

Williams, Randall D.et al, et al. Randall D. Williams Letter to Thomas H. Kent Regarding a Snowy Owl Sighting in Sioux City, November 26, 1987. 1987.