Cita APA (7a ed.)

Ager, D. V. (1980). The Geology of Europe. McGRAW-HILL Book Company.

Cita Chicago Style (17a ed.)

Ager, Derek Victor. The Geology of Europe. London [etc.]: McGRAW-HILL Book Company, 1980.

Cita MLA (9a ed.)

Ager, Derek Victor. The Geology of Europe. McGRAW-HILL Book Company, 1980.