APA

Hill J. M., . (1922). Bauxite and Aluminum in 1921. Washington, D.C: Government Printing Office.

Chicago

Hill James M, . 1922. Bauxite and Aluminum in 1921. Washington, D.C: Government Printing Office.

Harvard

Hill J. M., . (1922). Bauxite and Aluminum in 1921. Washington, D.C: Government Printing Office.

MLA

Hill James M, . Bauxite and Aluminum in 1921. Washington, D.C: Government Printing Office. 1922.