Bartsch, P. (1909). A Monograph of the West American Pyramidellid Mollusks: By William Healy Dall and Paul Bartsch. Government Printing Office.
Chicago-Zitierstil (17. Ausg.)Bartsch, Paul. A Monograph of the West American Pyramidellid Mollusks: By William Healy Dall and Paul Bartsch. Washington: Government Printing Office, 1909.
MLA-Zitierstil (9. Ausg.)Bartsch, Paul. A Monograph of the West American Pyramidellid Mollusks: By William Healy Dall and Paul Bartsch. Government Printing Office, 1909.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.