Hazen, T. E. (1901). The Ulothricaceae and Chaetophoraceae of the United States. The Club.
Lua i Stíl Chicago (17ú heag.)Hazen, Tracy Elliot. The Ulothricaceae and Chaetophoraceae of the United States. New York: The Club, 1901.
Lua MLA (9ú heag.)Hazen, Tracy Elliot. The Ulothricaceae and Chaetophoraceae of the United States. The Club, 1901.
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