APA (7th ed.) Citation

Ries, H. (1916). Economic geology (4th ed., thoroughly rev. and enl.). Wiley [u.a.].

Chicago Style (17th ed.) Citation

Ries, Heinrich. Economic Geology. 4th ed., thoroughly rev. and enl. New York: Wiley [u.a.], 1916.

MLA (9th ed.) Citation

Ries, Heinrich. Economic Geology. 4th ed., thoroughly rev. and enl. Wiley [u.a.], 1916.