Cita APA (7a ed.)

Williams, C. (1980). Mount St. Helens, a changing landscape. Graphic Arts Center Pub. Co..

Cita Chicago Style (17a ed.)

Williams, Chuck. Mount St. Helens, a Changing Landscape. Portland, Or.: Graphic Arts Center Pub. Co., 1980.

Cita MLA (8a ed.)

Williams, Chuck. Mount St. Helens, a Changing Landscape. Graphic Arts Center Pub. Co., 1980.

Precaución: Estas citas no son 100% exactas.