WWW IMDB, 21-11-2017---(B. P. Schulberg; b. January 19, 1892 in Bridgeport, Connecticut, USA; d. February 25, 1957 (age 65) in Key Biscayne, Florida, USA; producer)

Madame Butterfly, D.L. 2017---folleto del DVD (productor, B.P. Schulberg)