Παραπομπή APA

Society of Economic Geologists. (1918). Economic Geology Vol.13 Nos.1-8.

Παραπομπή Chicago Style

Society of Economic Geologists. Economic Geology Vol.13 Nos.1-8. Economic Geology Publishing Co, 1918.

Παραπομπή MLA

Society of Economic Geologists. Economic Geology Vol.13 Nos.1-8. 1918.