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APA Zitierstil

Bergstrom, R. E. (1968). The quaternary of Illinois: A symposium in observance of the centennial of the University of Illinois, February 12 and 13, 1968. Urbana-IL: University of Illinois.

Chicago Zitierstil

Bergstrom, Robert E. The Quaternary of Illinois: A Symposium in Observance of the Centennial of the University of Illinois, February 12 and 13, 1968. Urbana-IL: University of Illinois, 1968.

MLA Zitierstil

Bergstrom, Robert E. The Quaternary of Illinois: A Symposium in Observance of the Centennial of the University of Illinois, February 12 and 13, 1968. Urbana-IL: University of Illinois, 1968.