APA Citation

Orr, R. T., & Orr, M. C. (1974). Wildflowers of Western America. New York: Knopf.

Chicago Style Citation

Orr, Robert Thomas, and Margaret C. Orr. Wildflowers of Western America. New York: Knopf, 1974.

MLA Citation

Orr, Robert Thomas, and Margaret C. Orr. Wildflowers of Western America. New York: Knopf, 1974.

Warning: These citations may not always be 100% accurate.