DOWLING, W. F., & SAYLES, L. R. (1978). How managers motivate: The imperatives of supervision. McGraw-hill.
Lua i Stíl Chicago (17ú heag.)DOWLING, William F., agus Leonard R. SAYLES. How Managers Motivate: The Imperatives of Supervision. New York: McGraw-hill, 1978.
Lua MLA (9ú heag.)DOWLING, William F., agus Leonard R. SAYLES. How Managers Motivate: The Imperatives of Supervision. McGraw-hill, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.