APA-referens (7:e uppl.)

Gordon, R. B. (2019). American Iron, 1607-1900. Johns Hopkins University Press.

Chicago-referens (17:e uppl.)

Gordon, Robert B. American Iron, 1607-1900. Baltimore, Md.: Johns Hopkins University Press, 2019.

MLA-referens (9:e uppl.)

Gordon, Robert B. American Iron, 1607-1900. Johns Hopkins University Press, 2019.