Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Frye, J. C. (1968). Definition of Wisconsinan stage: Contributions to stratigraphy.- Washington, D.C.

Chicago Citation Edition Citation

Frye, John C. Definition of Wisconsinan Stage: Contributions to Stratigraphy.- Washington, D.C. 1968.

MLA Citation Edition Citation

Frye, John C. Definition of Wisconsinan Stage: Contributions to Stratigraphy.- Washington, D.C. 1968.