Cita APA (7a ed.)

Williams, A. Mineral resources of the United States / Albert Williams Jr.

Cita Chicago Style (17a ed.)

Williams, Albert. Mineral Resources of the United States / Albert Williams Jr. Washington : government printing office, 1883.

Cita MLA (8a ed.)

Williams, Albert. Mineral Resources of the United States / Albert Williams Jr.

Precaución: Estas citas no son 100% exactas.