director/producer, John Edginton ; producers, Gillian Darling, Jack Silberman, George Johnson ; a Sarus/Otmoor production in co-production with the National Film Board of Canada and Channel Four Television ; in association with the Knowledge Network ... [and others]
realización colectiva de la Dirección General de Actividades Cinematográficas UNAM ; producción ejecutiva, Iván Trujillo Bolio ; edición, Eduardo Barrón Molina