Cita APA (7a ed.)

Hayes, C. J. (1911). Contributions to economic geology. Government Printing Office.

Cita Chicago Style (17a ed.)

Hayes, Carlton J.H. Contributions to Economic Geology. [S.l.]: Government Printing Office, 1911.

Cita MLA (8a ed.)

Hayes, Carlton J.H. Contributions to Economic Geology. Government Printing Office, 1911.