APA (7th ed.) Citation

Spence, W. (1993). Responses to Iben Browning's prediction of a 1990 New Madrid, Missouri, earthquake. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Spence, William. Responses to Iben Browning's Prediction of a 1990 New Madrid, Missouri, Earthquake. Washington: United States Government Printing Office, 1993.

MLA (9th ed.) Citation

Spence, William. Responses to Iben Browning's Prediction of a 1990 New Madrid, Missouri, Earthquake. United States Government Printing Office, 1993.