APA

Drewes H., United States Geological Survey, . (1991). Description and development of the Cordilleran Orogenic Belt in the southwestern United States and northern Mexico. Washington, DC: Gov. Print Off.

Chicago

Drewes Harald, United States Geological Survey, . 1991. Description and development of the Cordilleran Orogenic Belt in the southwestern United States and northern Mexico. Washington, DC: Gov. Print Off.

Harvard

Drewes H., United States Geological Survey, . (1991). Description and development of the Cordilleran Orogenic Belt in the southwestern United States and northern Mexico. Washington, DC: Gov. Print Off.

MLA

Drewes Harald, United States Geological Survey, . Description and development of the Cordilleran Orogenic Belt in the southwestern United States and northern Mexico. Washington, DC: Gov. Print Off. 1991.