By Correa, Maevia Noemí.
Buenos Aires : INTA, 1969

Kew : R. Botanic Gardens, 1995 , La Biblioteca posee vol. 1: For the genera: Cattleya, Cypripedium, Laelia, Paphiopedilum, Phalaenopsis, Phragmipedium, Pleione and Sophronitis, including accounts of: Constantia, Paraphalaenopsis and Sophronitella. 0-947643-87-7,v.1