Cohen, A. (2003). Mary Elizabeth Barber, some early South African geologists, and the discoveries of diamonds.
Chicago-Zitierstil (17. Ausg.)Cohen, Alan. Mary Elizabeth Barber, Some Early South African Geologists, and the Discoveries of Diamonds. 2003.
MLA-Zitierstil (9. Ausg.)Cohen, Alan. Mary Elizabeth Barber, Some Early South African Geologists, and the Discoveries of Diamonds. 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.