Cita APA (7a ed.)

Zeller,E.J. (1965). Modern methods for measurement of geologic time. Division of Mines and Geology. Mineral Information Service.

Cita Chicago Style (17a ed.)

Zeller,E.J. Modern Methods for Measurement of Geologic Time. California - EEUU: Division of Mines and Geology. Mineral Information Service, 1965.

Cita MLA (8a ed.)

Zeller,E.J. Modern Methods for Measurement of Geologic Time. Division of Mines and Geology. Mineral Information Service, 1965.