APA

Luther W. M., . (1992). The marketing plan: how to prepare and implement it. New York: American Management Association.

Chicago

Luther William M, . 1992. The marketing plan: how to prepare and implement it. New York: American Management Association.

Harvard

Luther W. M., . (1992). The marketing plan: how to prepare and implement it. New York: American Management Association.

MLA

Luther William M, . The marketing plan: how to prepare and implement it. New York: American Management Association. 1992.