APA Style

Hansen, Wallace R.. (1991). Suggestions to Authors of the Reports of the United States Geological Survey, Seventh Edition (7th). Washington, D.C.: U.S. Government.

Chicago Style

Hansen, Wallace R.. Suggestions to Authors of the Reports of the United States Geological Survey, Seventh Edition. 7th Washington, D.C.: U.S. Government, 1991. Text.

MLA Style

Hansen, Wallace R.. Suggestions to Authors of the Reports of the United States Geological Survey, Seventh Edition. 7th Washington, D.C.: U.S. Government, 1991. Text.

Turabian Style

Hansen, Wallace R.. Suggestions to Authors of the Reports of the United States Geological Survey, Seventh Edition. 7th Washington, D.C.: U.S. Government, 1991. Print.