Osborn, H. S. (1923). Prospector's field-book and guide in the search for and the easy determination of ores and other useful minerals (9. edition.). Baird & Co.
Chicago-Zitierstil (17. Ausg.)Osborn, H. S. Prospector's Field-book and Guide in the Search for and the Easy Determination of Ores and Other Useful Minerals. 9. edition. New York: Baird & Co, 1923.
MLA-Zitierstil (9. Ausg.)Osborn, H. S. Prospector's Field-book and Guide in the Search for and the Easy Determination of Ores and Other Useful Minerals. 9. edition. Baird & Co, 1923.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.