Dunbar, C. O. (1960). Historical geology (2ª ed.). John Wiley and Sons.
Citación estilo ChicagoDunbar, Carl O. Historical Geology. 2ª ed. New York: John Wiley and Sons, 1960.
Cita MLADunbar, Carl O. Historical Geology. 2ª ed. John Wiley and Sons, 1960.
Warning: These citations may not always be 100% accurate.