Cita APA (7a ed.)
Skinner, B. J., & Porter, S. C. (1992). The dynamic earth: An introduction to physical geology (2.vyd.). Wiley&Sons.
Cita Chicago Style (17a ed.)
Skinner, Brian J., y Stephen C. Porter. The Dynamic Earth: An Introduction to Physical Geology. 2.vyd. New York: Wiley&Sons, 1992.
Cita MLA (9a ed.)
Skinner, Brian J., y Stephen C. Porter. The Dynamic Earth: An Introduction to Physical Geology. 2.vyd. Wiley&Sons, 1992.
Precaución: Estas citas no son 100% exactas.