Stark, P. L. (1990). A cartobibliography of separately published U.S. Geological Survey special maps and river surveys. Western Assoc. of Map Libraries.
Chicago-Zitierstil (17. Ausg.)Stark, Peter L. A Cartobibliography of Separately Published U.S. Geological Survey Special Maps and River Surveys. Santa Cruz, Calif: Western Assoc. of Map Libraries, 1990.
MLA-Zitierstil (9. Ausg.)Stark, Peter L. A Cartobibliography of Separately Published U.S. Geological Survey Special Maps and River Surveys. Western Assoc. of Map Libraries, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.