Cita APA (7th ed.)

Ragland, P. C. (1989). Basic analytical petrology. Oxford University Press.

Cita Chicago (17th ed.)

Ragland, Paul C. Basic Analytical Petrology. New York: Oxford University Press, 1989.

Cita MLA (9th ed.)

Ragland, Paul C. Basic Analytical Petrology. Oxford University Press, 1989.