APA

Drucker P. F., . (1977). An introductory view of management. New York: Harper's College Press.

Chicago

Drucker Peter Ferdinand, . 1977. An introductory view of management. New York: Harper's College Press.

Harvard

Drucker P. F., . (1977). An introductory view of management. New York: Harper's College Press.

MLA

Drucker Peter Ferdinand, . An introductory view of management. New York: Harper's College Press. 1977.