Black, G. (1992). Iowa birdlife. Published for the Nature Conservancy by the University of Iowa Press.
Chicago-Zitierstil (17. Ausg.)Black, Gladys. Iowa Birdlife. Iowa City: Published for the Nature Conservancy by the University of Iowa Press, 1992.
MLA-Zitierstil (9. Ausg.)Black, Gladys. Iowa Birdlife. Published for the Nature Conservancy by the University of Iowa Press, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.