(1908). Systematic investigations in phanerogams, ferns, and diatoms. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationSystematic Investigations in Phanerogams, Ferns, and Diatoms. [Place of publication not identified]: U.S. Government Printing Office, 1908.
MLA (9th ed.) CitationSystematic Investigations in Phanerogams, Ferns, and Diatoms. U.S. Government Printing Office, 1908.
Warning: These citations may not always be 100% accurate.