Cita APA

Dunbar, C. O. (1960). Historical geology. John Wiley r Sons.

Chicago Style (17th ed.) Citation

Dunbar, Carl O. Historical Geology. John Wiley r Sons, 1960.

Cita MLA

Dunbar, Carl O. Historical Geology. John Wiley r Sons, 1960.

Atenció: Aquestes cites poden no estar 100% correctes.