ГОСТ:
Hofmann A. W. Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust //Earth and Planetary Science Letters. — 1988. — T.90. —№. 3 —C. 297-314
MLA:
Hofmann, Albrecht W. "Chemical differentiation of the Earth: the relationship between mantle, continental crust, and oceanic crust" Earth and Planetary Science Letters 90.3 (1988): 297-314