APA-Zitierstil (7. Ausg.)

Pratt, W. P. (1991). The Conterminous United States Mineral-Resource Assessment Program: Background information to accompany folio of geologic and mineral-resource maps of the Rolla 1 ̊x 2 ̊quadrangle, Missouri. U.S. Gov. Print. Off.

Chicago-Zitierstil (17. Ausg.)

Pratt, Walden P. The Conterminous United States Mineral-Resource Assessment Program: Background Information to Accompany Folio of Geologic and Mineral-resource Maps of the Rolla 1 ̊x 2 ̊quadrangle, Missouri. Washington, DC: U.S. Gov. Print. Off, 1991.

MLA-Zitierstil (9. Ausg.)

Pratt, Walden P. The Conterminous United States Mineral-Resource Assessment Program: Background Information to Accompany Folio of Geologic and Mineral-resource Maps of the Rolla 1 ̊x 2 ̊quadrangle, Missouri. U.S. Gov. Print. Off, 1991.