The normal oxidation-reduction potentials of the system hexavalent-trivalent chromium:
the intermediate formation of tetravalent chromium ...
by Richard John De Gray.

APA Citation

De Gray, R. John. (1940). The normal oxidation-reduction potentials of the system hexavalent-trivalent chromium: the intermediate formation of tetravalent chromium ... New York City.

MLA Citation

De Gray, Richard John, 1907-. The Normal Oxidation-reduction Potentials of the System Hexavalent-trivalent Chromium: the Intermediate Formation of Tetravalent Chromium ... New York City, 1940.

Warning: These citations may not always be complete (especially for serials).