(1880). Lake Superior chart: Projected from a trigonometrical survey (Published in 1870. Aids to navigation corrected to January 1880.). [Bureau of Topographical Engineers].
Chicago-Zitierstil (17. Ausg.)Lake Superior Chart: Projected from a Trigonometrical Survey. Published in 1870. Aids to navigation corrected to January 1880. S.l. [Washington, D.C.]: [Bureau of Topographical Engineers], 1880.
MLA-Zitierstil (9. Ausg.)Lake Superior Chart: Projected from a Trigonometrical Survey. Published in 1870. Aids to navigation corrected to January 1880. [Bureau of Topographical Engineers], 1880.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.