Παραπομπή APA

Hanson, J. L. (1973). Notess on Commerce (3rd ed.). Pitman.

Παραπομπή Chicago Style

Hanson, J L. Notess on Commerce. 3rd ed. London: Pitman, 1973.

Παραπομπή MLA

Hanson, J L. Notess on Commerce. 3rd ed. Pitman, 1973.