Soper, J. D. (1924). Ceratodon purpureus. University of Michigan Herbarium Catalog Collection.
Chicago Style (17th ed.) CitationSoper, J. D. Ceratodon Purpureus. University of Michigan Herbarium Catalog Collection, 1924.
MLA (8th ed.) CitationSoper, J. D. Ceratodon Purpureus. University of Michigan Herbarium Catalog Collection, 1924.
Warning: These citations may not always be 100% accurate.