Jonew, M. (1973). Commerce examination question answered. Pitman Pub.
Citazione stile Chigago Style (17a edizione)Jonew, M. Commerce Examination Question Answered. London: Pitman Pub, 1973.
Citatione MLA (9a ed.)Jonew, M. Commerce Examination Question Answered. Pitman Pub, 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.