Hofmann, Albrecht W. (новембар 1988). „Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust”. Earth and Planetary Science Letters. 90 (3): 297—314. Bibcode:1988E&PSL..90..297H. doi:10.1016/0012-821X(88)90132-X.CS1 одржавање: Формат датума (веза)
Hofmann, Albrecht W. (новембар 1988). „Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust”. Earth and Planetary Science Letters. 90 (3): 297—314. Bibcode:1988E&PSL..90..297H. doi:10.1016/0012-821X(88)90132-X.CS1 одржавање: Формат датума (веза)