Cita APA

Gough, L. P., & Wilson, F. H. (2001). Geologic studies in Alaska by the U.S. Geological Survey, 1999. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey.

Citación estilo Chicago

Gough, Larry P., y Frederic H. Wilson. Geologic Studies in Alaska By the U.S. Geological Survey, 1999. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2001.

Cita MLA

Gough, Larry P., y Frederic H. Wilson. Geologic Studies in Alaska By the U.S. Geological Survey, 1999. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2001.