Cita APA (7th ed.)

FOSTER, R. J. (1969). Gefneral geology. charles B. Merrill publishing.

Cita Chicago (17th ed.)

FOSTER, Robert J. Gefneral Geology. Columbus: charles B. Merrill publishing, 1969.

Cita MLA (9th ed.)

FOSTER, Robert J. Gefneral Geology. charles B. Merrill publishing, 1969.