Piper, C. V., & Beattie, R. K. (1901). The flora of the Palouse region: Containing descriptions of all the spermatophytes and pteridophytes known to grow wild in the area within 35 kilometers of Pullman, Washington. The Washington Agricultural College and School of Science.
Chicago Style (17th ed.) CitationPiper, Charles V., and R. Kent Beattie. The Flora of the Palouse Region: Containing Descriptions of All the Spermatophytes and Pteridophytes Known to Grow Wild in the Area Within 35 Kilometers of Pullman, Washington. Pullman: The Washington Agricultural College and School of Science, 1901.
MLA引文Piper, Charles V., and R. Kent Beattie. The Flora of the Palouse Region: Containing Descriptions of All the Spermatophytes and Pteridophytes Known to Grow Wild in the Area Within 35 Kilometers of Pullman, Washington. The Washington Agricultural College and School of Science, 1901.