APA-referens (7:e uppl.)

Richards, J. W. (1906). Metallurgical calculations. McGraw-Hill.

Chicago-referens (17:e uppl.)

Richards, Joseph William. Metallurgical Calculations. New York: McGraw-Hill, 1906.

MLA-referens (9:e uppl.)

Richards, Joseph William. Metallurgical Calculations. McGraw-Hill, 1906.