Cita APA

Beikman, H. M. (1980). Geological map of Alaska. [Estados Unidos]: State of Alaska Department of Natural Resources, Division of Geological and Geophysical Surveys.

Citación estilo Chicago

Beikman, Helen M. Geological Map of Alaska. [Estados Unidos]: State of Alaska Department of Natural Resources, Division of Geological and Geophysical Surveys, 1980.

Cita MLA

Beikman, Helen M. Geological Map of Alaska. [Estados Unidos]: State of Alaska Department of Natural Resources, Division of Geological and Geophysical Surveys, 1980.