Cita APA

Griffiths, J. C., & Ondrick, C. W. (1968). Sampling a geological population. Lawrence: State Geological Survey University of Kansas.

Citación estilo Chicago

Griffiths, John C., y Charles W. Ondrick. Sampling a Geological Population. Lawrence: State Geological Survey University of Kansas, 1968.

Cita MLA

Griffiths, John C., y Charles W. Ondrick. Sampling a Geological Population. Lawrence: State Geological Survey University of Kansas, 1968.