APA (7th ed.) Citation

Weber, W. A., & Johnston, B. C. (1976). Vascular plants, lichens, and bryophytes. University of Colorado Museum.

Chicago Style (17th ed.) Citation

Weber, William A., and Barry C. Johnston. Vascular Plants, Lichens, and Bryophytes. Boulder, Colo.: University of Colorado Museum, 1976.

MLA (9th ed.) Citation

Weber, William A., and Barry C. Johnston. Vascular Plants, Lichens, and Bryophytes. University of Colorado Museum, 1976.