Voss, E. G. (1997). Michigan flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state (4. print.). Cranbrook Inst.of Science.
Chicago-Zitierstil (17. Ausg.)Voss, Edward G. Michigan Flora: A Guide to the Identification and Occurrence of the Native and Naturalized Seed-plants of the State. 4. print. Bloomfield Hills, Mich: Cranbrook Inst.of Science, 1997.
MLA-Zitierstil (9. Ausg.)Voss, Edward G. Michigan Flora: A Guide to the Identification and Occurrence of the Native and Naturalized Seed-plants of the State. 4. print. Cranbrook Inst.of Science, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.