APA-referens (7:e uppl.)

Humphreys, A. A., King, C., Hague, A., Hague, J. D., Meek, F. B., Hall, J., . . . Marsh, O. C. (1870). Report of the geological exploration of the fortieth parallel, made by order of the secretary of war ..

Chicago-referens (17:e uppl.)

Humphreys, Andrew Atkinson, et al. Report of the Geological Exploration of the Fortieth Parallel, Made by Order of the Secretary of War .. Washington, 1870.

MLA-referens (9:e uppl.)

Humphreys, Andrew Atkinson, et al. Report of the Geological Exploration of the Fortieth Parallel, Made by Order of the Secretary of War .. 1870.