APA (7e ed.) Bronvermelding

Marshall, D. R. (1999). The four elements of successful management: Select, direct, evaluate, reward. AMACOM.

Chicago (17e ed.) Bronvermelding

Marshall, Don R. The Four Elements of Successful Management: Select, Direct, Evaluate, Reward. New York, N.Y: AMACOM, 1999.

MLA (9e ed.) Bronvermelding

Marshall, Don R. The Four Elements of Successful Management: Select, Direct, Evaluate, Reward. AMACOM, 1999.