APA (7th ed.) Citation

Allen, P. a., Allen, R. I. a., (curator), I. S. U. S. C. a. U. A., Kent, T. H., Armstrong, E., Armstrong, E., & Walsh, P. J. (1997). Field notes and letter to Thomas H. Kent contributed by Pam Allen and Reid I. Allen, December 2, 1997.

Chicago Style (17th ed.) Citation

Allen, Pamet al, Reid I.et al Allen, Iowa State University. Special Collections and University Archives (curator), Thomas H. Kent, Eloise Armstrong, Eugene Armstrong, and Philip J. Walsh. Field Notes and Letter to Thomas H. Kent Contributed by Pam Allen and Reid I. Allen, December 2, 1997. 1997.

MLA (9th ed.) Citation

Allen, Pamet al, et al. Field Notes and Letter to Thomas H. Kent Contributed by Pam Allen and Reid I. Allen, December 2, 1997. 1997.