Παραπομπή APA

Legget, R. F. (1973). Cities and Geology. McGraw-Hill.

Παραπομπή Chicago Style

Legget, Robert F. Cities and Geology. New York: McGraw-Hill, 1973.

Παραπομπή MLA

Legget, Robert F. Cities and Geology. McGraw-Hill, 1973.