APA (7th ed.) Citation

Zietz, I. (1964). A magnetic anomaly of possible economic significance in southeastern Minnesota. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Zietz, Isidore. A Magnetic Anomaly of Possible Economic Significance in Southeastern Minnesota. Washington, D.C.: United States Department of the Interior, Geological Survey, 1964.

MLA (9th ed.) Citation

Zietz, Isidore. A Magnetic Anomaly of Possible Economic Significance in Southeastern Minnesota. United States Department of the Interior, Geological Survey, 1964.