Cita APA (7th ed.)

Cunningham, W. H. (1987). Marketing a managerial approach (2ª ed.). South-Western.

Cita Chicago (17th ed.)

Cunningham, William H. Marketing a Managerial Approach. 2ª ed. South-Western, 1987.

Cita MLA (9th ed.)

Cunningham, William H. Marketing a Managerial Approach. 2ª ed. South-Western, 1987.