Crocker, E. G. a., (curator), I. S. U. S. C. a. U. A., Black, G., Petersen, P. C., Thornton, R., Galvin, I. M., . . . Thornton, P. (1980). Edwin G. Crocker letter to Peter C. Petersen and Gladys Black regarding sighting of a Snowy Owl, January 29, 1980.
Chicago Style (17th ed.) CitationCrocker, Edwin G.et al, et al. Edwin G. Crocker Letter to Peter C. Petersen and Gladys Black Regarding Sighting of a Snowy Owl, January 29, 1980. 1980.
MLA (9th ed.) CitationCrocker, Edwin G.et al, et al. Edwin G. Crocker Letter to Peter C. Petersen and Gladys Black Regarding Sighting of a Snowy Owl, January 29, 1980. 1980.
Warning: These citations may not always be 100% accurate.