APA (7e ed.) Bronvermelding

SIBSON, R. E. (1976). Increasing employee productivity. Ama Com.

Chicago (17e ed.) Bronvermelding

SIBSON, Robert E. Increasing Employee Productivity. New York: Ama Com, 1976.

MLA (9e ed.) Bronvermelding

SIBSON, Robert E. Increasing Employee Productivity. Ama Com, 1976.