APA (7th ed.) Citation

Petersen, P. C. a., (curator), I. S. U. S. C. a. U. A., Carter, D. L., Barber, A., Bendorf, C. J., Blevins, B. L., . . . Petersen, M. L. (1991). Peter C. Petersen letter to Carl Bendorf regarding spring birding report for IOU quarterly field report spring 1991, May 31, 1991.

Chicago Style (17th ed.) Citation

Petersen, Peter C.et al, Iowa State University. Special Collections and University Archives (curator), Dennis L. Carter, Ann Barber, Carl J. Bendorf, Brian L. Blevins, Corey T. Blevins, Donald W. Moeller, and Mary Lou Petersen. Peter C. Petersen Letter to Carl Bendorf Regarding Spring Birding Report for IOU Quarterly Field Report Spring 1991, May 31, 1991. 1991.

MLA (9th ed.) Citation

Petersen, Peter C.et al, et al. Peter C. Petersen Letter to Carl Bendorf Regarding Spring Birding Report for IOU Quarterly Field Report Spring 1991, May 31, 1991. 1991.