3M Canada.
London Magazine. Ja 1987. p.70.
London Business Monthly Magazine. Au 1987. pp.53-54.
London Business Monthly Magazine. Ja 1994. pp.23-26.
Business Times. Ma 26, 1994. p.27. [microfilm]
Business Times. Se 1994. p.24. [microfilm]
Business London. Ap 2001. pp.8-9.
Business London. Se 2001. pp.22-28.
Business London. Fe 2004. p.8.
