Smithsonian Institution. Office of the Secretary & Maxon, W. R. (1915). Report upon collection of ferns from western South America. [publisher not identified].
Chicago Style (17th ed.) CitationSmithsonian Institution. Office of the Secretary and William R. Maxon. Report upon Collection of Ferns from Western South America. Washington, D.C.: [publisher not identified], 1915.
MLA (9th ed.) CitationSmithsonian Institution. Office of the Secretary and William R. Maxon. Report upon Collection of Ferns from Western South America. [publisher not identified], 1915.
Warning: These citations may not always be 100% accurate.