Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Lewis, T. H. (1891). Bowlder outline figures in the Dakotas, surveyed in the summer of 1890. - Washington, D.C.

Chicago Citation Edition Citation

Lewis, Thomas H. Bowlder Outline Figures in the Dakotas, Surveyed in the Summer of 1890. - Washington, D.C. 1891.

MLA Citation Edition Citation

Lewis, Thomas H. Bowlder Outline Figures in the Dakotas, Surveyed in the Summer of 1890. - Washington, D.C. 1891.