Robinson, H. (1973). Additions to the genus Tagetes (Helenieae, Asteraceae) ([Sonderdr.].).
Chicago Style (17th ed.) CitationRobinson, Harold. Additions to the Genus Tagetes (Helenieae, Asteraceae). [Sonderdr.]. 1973.
MLA (9th ed.) CitationRobinson, Harold. Additions to the Genus Tagetes (Helenieae, Asteraceae). [Sonderdr.]. 1973.
Warning: These citations may not always be 100% accurate.