APA (7th ed.) Citation

Humphrey & Stokes. (2000). The 21st century supervisor: Nine essential skills for frontline leaders. Jossey-Bass/Pfeiffer.

Chicago Style (17th ed.) Citation

Humphrey and Stokes. The 21st Century Supervisor: Nine Essential Skills for Frontline Leaders. San Francisco, Calif: Jossey-Bass/Pfeiffer, 2000.

MLA (8th ed.) Citation

Humphrey and Stokes. The 21st Century Supervisor: Nine Essential Skills for Frontline Leaders. Jossey-Bass/Pfeiffer, 2000.