APA (7th ed.) Citation

Silcock, W. R. a., (curator), I. S. U. S. C. a. U. A., & Halmi, N. S. (1979). W. Ross Silcock letter to Nicholas S. Halmi regarding winter bird sightings, February 28, 1979.

Chicago Style (17th ed.) Citation

Silcock, W. Rosset al, Iowa State University. Special Collections and University Archives (curator), and Nicholas S. Halmi. W. Ross Silcock Letter to Nicholas S. Halmi Regarding Winter Bird Sightings, February 28, 1979. 1979.

MLA (9th ed.) Citation

Silcock, W. Rosset al, et al. W. Ross Silcock Letter to Nicholas S. Halmi Regarding Winter Bird Sightings, February 28, 1979. 1979.