Cita APA (7th ed.)
Clark, S. P., Donnelly, T. w., & O'Keefe, J. A. (1963). The earth sciences: Problems and progress in current research. The University of Chicago Press.
Cita Chicago (17th ed.)
Clark, Sydney P., Thomas w. Donnelly, i John A. O'Keefe. The Earth Sciences: Problems and Progress in Current Research. Chicago: The University of Chicago Press, 1963.
Cita MLA (9th ed.)
Clark, Sydney P., et al. The Earth Sciences: Problems and Progress in Current Research. The University of Chicago Press, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.