APA
Hill J. M., . (1916). Platinum and allied metals in 1915. Washington, D.C: Government Printing Office.
Chicago
Hill James M, . 1916. Platinum and allied metals in 1915. Washington, D.C: Government Printing Office.
Harvard
Hill J. M., . (1916). Platinum and allied metals in 1915. Washington, D.C: Government Printing Office.
MLA
Hill James M, . Platinum and allied metals in 1915. Washington, D.C: Government Printing Office. 1916.