Fonte positiva dos dados

Editor de: Video world-wide. 1988

LC name aut. 77/83set

BNB 1987

LC register 1987: (B 454-496)

LC name auth. 87/97: (d.n.; head of educ., Brit. Film Inst.)

British Library: (http://blpc.bl.uk: d.n.)

Fonte negativa dos dados

LC name aut. 85/87set