Ames, O. (1982). Orchidaceæ: Illustrations and studies of the family Orchidaceæ, issuing from the Ames Botanical Laboratory, North Easton, Massachusetts. Bishen Singh Mahendra Pal Singh.
Chicago-referens (17:e uppl.)Ames, Oakes. Orchidaceæ: Illustrations and Studies of the Family Orchidaceæ, Issuing from the Ames Botanical Laboratory, North Easton, Massachusetts. Dehra Dun: Bishen Singh Mahendra Pal Singh, 1982.
MLA-referens (8:e uppl.)Ames, Oakes. Orchidaceæ: Illustrations and Studies of the Family Orchidaceæ, Issuing from the Ames Botanical Laboratory, North Easton, Massachusetts. Bishen Singh Mahendra Pal Singh, 1982.
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