APA-Zitierstil (7. Ausg.)

(1973). Map showing construction materials resources in the Parker quadrangle, Arapahoe and Douglas counties, Colorado. U.S. Geological Survey.

Chicago-Zitierstil (17. Ausg.)

Map Showing Construction Materials Resources in the Parker Quadrangle, Arapahoe and Douglas Counties, Colorado. Washington, D.C: U.S. Geological Survey, 1973.

MLA-Zitierstil (9. Ausg.)

Map Showing Construction Materials Resources in the Parker Quadrangle, Arapahoe and Douglas Counties, Colorado. U.S. Geological Survey, 1973.