Cooper, J. G., Anderson, A. R., & Buckingham, N. M. (1994). Plant life of Washington Territory: Northern Pacific Railroad survey, botanical report, 1853-1861. Washington Native Plant Society.
Chicago Style (17th ed.) CitationCooper, J. G., Alice Racer Anderson, and Nelsa M. Buckingham. Plant Life of Washington Territory: Northern Pacific Railroad Survey, Botanical Report, 1853-1861. Woodinville, WA: Washington Native Plant Society, 1994.
MLA (8th ed.) CitationCooper, J. G., et al. Plant Life of Washington Territory: Northern Pacific Railroad Survey, Botanical Report, 1853-1861. Washington Native Plant Society, 1994.
Warning: These citations may not always be 100% accurate.