Cita APA

Rittershausen, W. (1993). 100 years of orchids: The orchid review centenary year book 1893-1993. Essex: Bardfield books.

Citación estilo Chicago

Rittershausen, Wilma. 100 Years of Orchids: The Orchid Review Centenary Year Book 1893-1993. Essex: Bardfield books, 1993.

Cita MLA

Rittershausen, Wilma. 100 Years of Orchids: The Orchid Review Centenary Year Book 1893-1993. Essex: Bardfield books, 1993.

Precaución: Estas citas no son 100% exactas.