Vasey, G. (1891). Grasses of the Southwest: Illustrations of North American grasses. Plates and descriptions of the grasses of the desert region of Western Texas, New Mexico, Arizona, and Southern California. Government Printing Office.
Chicago-Zitierstil (17. Ausg.)Vasey, George. Grasses of the Southwest: Illustrations of North American Grasses. Plates and Descriptions of the Grasses of the Desert Region of Western Texas, New Mexico, Arizona, and Southern California. Washington: Government Printing Office, 1891.
MLA-Zitierstil (9. Ausg.)Vasey, George. Grasses of the Southwest: Illustrations of North American Grasses. Plates and Descriptions of the Grasses of the Desert Region of Western Texas, New Mexico, Arizona, and Southern California. Government Printing Office, 1891.