APA-viite

Guptan, S. U. (2012). Executive coaching: A practitionars guide to creating exellence. Response Books.

Chicago-tyylinen lähdeviittaus

Guptan, Sunil Unny. Executive Coaching: A Practitionars Guide to Creating Exellence. Thousand Oaks, Calif.: Response Books, 2012.

MLA-viite

Guptan, Sunil Unny. Executive Coaching: A Practitionars Guide to Creating Exellence. Response Books, 2012.