Style de citation APA (7e éd.)

Callaway, J., & Callaway, J. (2012). Clients first: The two word miracle. Wiley.

Style de citation Chicago (17e éd.)

Callaway, Joseph, et JoAnn Callaway. Clients First: The Two Word Miracle. Hoboken, N.J.: Wiley, 2012.

Style de citation MLA (8e éd.)

Callaway, Joseph, et JoAnn Callaway. Clients First: The Two Word Miracle. Wiley, 2012.