APA ציטוט

Society of Economic Geologists. (1920). Economic Geology Vol.15 Nos.1-8.

Chicago Edition Citation

Society of Economic Geologists. Economic Geology Vol.15 Nos.1-8. Economic Geology Publishing Co, 1920.

ציטוט MLA

Society of Economic Geologists. Economic Geology Vol.15 Nos.1-8. 1920.