APA-ийн эшлэл(7 дахь хэвлэлт)

Eilers, L. J., & Roosa, D. M. (1994). The vascular plants of Iowa: An annotated checklist and natural history. University of Iowa Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Eilers, Lawrence J., ба Dean M. Roosa. The Vascular Plants of Iowa: An Annotated Checklist and Natural History. Iowa City: University of Iowa Press, 1994.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Eilers, Lawrence J., ба Dean M. Roosa. The Vascular Plants of Iowa: An Annotated Checklist and Natural History. University of Iowa Press, 1994.