New hybrid list 1949. Supplementary to orchid catalogue.

MLA

New Hybrid List 1949. Supplementary to Orchid Catalogue. Enfield: Stuart Low Co., 1949.

APA

(1949). New hybrid list 1949. Supplementary to orchid catalogue. Enfield: Stuart Low Co.

Chicago

New Hybrid List 1949. Supplementary to Orchid Catalogue. Enfield: Stuart Low Co., 1949.