Powars, D. S., & Bruce, T. S. (1999). The effects of the Chesapeake Bay impact crater on the geological framework and correlation of hydrogeologic units of the Lower York-James Peninsula, Virginia. US Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Powars, David S., und T. Scott Bruce. The Effects of the Chesapeake Bay Impact Crater on the Geological Framework and Correlation of Hydrogeologic Units of the Lower York-James Peninsula, Virginia. Washington, DC: US Gov. Print. Off, 1999.
MLA-Zitierstil (9. Ausg.)Powars, David S., und T. Scott Bruce. The Effects of the Chesapeake Bay Impact Crater on the Geological Framework and Correlation of Hydrogeologic Units of the Lower York-James Peninsula, Virginia. US Gov. Print. Off, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.