Rutherford, R. Two Southern Plant Species, Nutallanthus canadensis (L.) D.A. Sutton and Opuntia cespitosa Raf., Discovered as Disjunct in the Huron Mountains, Marquette County, Michigan. Michigan Publishing Services.
Chicago Style (17th ed.) CitationRutherford, Ryne. Two Southern Plant Species, Nutallanthus Canadensis (L.) D.A. Sutton and Opuntia Cespitosa Raf., Discovered as Disjunct in the Huron Mountains, Marquette County, Michigan. Michigan Publishing Services.
MLA (9th ed.) CitationRutherford, Ryne. Two Southern Plant Species, Nutallanthus Canadensis (L.) D.A. Sutton and Opuntia Cespitosa Raf., Discovered as Disjunct in the Huron Mountains, Marquette County, Michigan. Michigan Publishing Services.
Warning: These citations may not always be 100% accurate.