APA-viite

Hopson, B., & Scally, M. (1994). Twelve steps to success through service. Excel.

Chicago-tyylinen lähdeviittaus

Hopson, Barrie, ja Mike Scally. Twelve Steps to Success Through Service. New Delhi: Excel, 1994.

MLA-viite

Hopson, Barrie, ja Mike Scally. Twelve Steps to Success Through Service. Excel, 1994.