Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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