APA

Welsh A. N., . (19811979). The skills of management. New York: Amacom.

Chicago

Welsh A N, . 19811979. The skills of management. New York: Amacom.

Harvard

Welsh A. N., . (19811979). The skills of management. New York: Amacom.

MLA

Welsh A N, . The skills of management. New York: Amacom. 19811979.