Cita APA

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

Citación estilo Chicago

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

Cita MLA

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