Cita APA (7a ed.)

Winterfield, C., & Phillips, L. (2016). SPHR: Senior professional in human resources (Third edition.). Pearson Certification.

Cita Chicago Style (17a ed.)

Winterfield, Cathy, y Larry Phillips. SPHR: Senior Professional in Human Resources. Third edition. [Place of publication not identified]: Pearson Certification, 2016.

Cita MLA (8a ed.)

Winterfield, Cathy, y Larry Phillips. SPHR: Senior Professional in Human Resources. Third edition. Pearson Certification, 2016.