Pendergast, Tom & Pendergast, Sara (toim.): International Dictionary of Films and Filmmakers, Vol. 4: Writers and Production Artists, 4th edition, s. 342–344. St. James Press, 2000. Teoksen verkkoversio (pdf) (viitattu 10.4.2015). englanti (Arkistoitu – Internet Archive)
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Pendergast, Tom & Pendergast, Sara (toim.): International Dictionary of Films and Filmmakers, Vol. 4: Writers and Production Artists, 4th edition, s. 342–344. St. James Press, 2000. Teoksen verkkoversio (pdf) (viitattu 10.4.2015). englanti (Arkistoitu – Internet Archive)