Style de citation APA

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

Style de citation Chicago

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

Style de citation MLA

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

Attention : ces citations peuvent ne pas être correctes à 100%.