http://es.wikipedia.org/wiki/John_S._Robertson

Robertson, John

Robertson, John Stuart

Robertson, J. S.

Dr. Jekyll y Mr. Hyde [vídeo], 1995---carát. (Dirección, John S. Robertson)

Internet movie database, 13-02-2003---(John Robertson; b. 1878, London, Ontario (Canada), d. 1964, Escondido, California; sometimes credited as J.S. Robertson, John Stuart Robertson, John Robertson; director, actor, writer)

Halliwell's film guide, de Leslie Halliwell, 1994---