Snyder, J. P. (1986). Map projections used for large-scale quadrangles by the U.S. Geological Survey. U.S. Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Snyder, John P. Map Projections Used for Large-scale Quadrangles by the U.S. Geological Survey. Washington, D.C: U.S. Gov. Print. Off, 1986.
MLA-Zitierstil (9. Ausg.)Snyder, John P. Map Projections Used for Large-scale Quadrangles by the U.S. Geological Survey. U.S. Gov. Print. Off, 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.