A revision of the goldenaster genus Pityopsis Nutt. (Compositae: Astereae) /
John C. Semple and Frank D. Bowers.
APA Citation
Semple, J. C., Bowers, F. D. (1985). A revision of the goldenaster genus Pityopsis Nutt. (Compositae: Astereae). Waterloo, Ont., Canada: Dept. of Biology, University of Waterloo.
MLA Citation
Semple, John C, and Frank D Bowers. A Revision of the Goldenaster Genus Pityopsis Nutt. (Compositae: Astereae). Waterloo, Ont., Canada: Dept. of Biology, University of Waterloo, 1985.
Warning: These citations may not always be complete (especially for serials).