Allen, P. H. 1. (1953). The orchids of Panama: Annotated check-list genera and species ; The swan orchids : a revision of the genus cycnoches. [Lugar de publicación no identificado]: [editor no identificado].
Chicago Style CitationAllen, Paul Hamilton 1911-1963. The Orchids of Panama: Annotated Check-list Genera and Species ; The Swan Orchids : A Revision of the Genus Cycnoches. [Lugar de publicación no identificado]: [editor no identificado], 1953.
MLA CitationAllen, Paul Hamilton 1911-1963. The Orchids of Panama: Annotated Check-list Genera and Species ; The Swan Orchids : A Revision of the Genus Cycnoches. [Lugar de publicación no identificado]: [editor no identificado], 1953.
Warning: These citations may not always be 100% accurate.