Citazione Stile APA (7a Edizione)

Butt, S. A. (1985). Essentials of commerce in East Africa (5th ed.). Cassell publishing limited.

Citazione stile Chigago Style (17a edizione)

Butt, Safdar Ali. Essentials of Commerce in East Africa. 5th ed. London: Cassell publishing limited, 1985.

Citatione MLA (9a ed.)

Butt, Safdar Ali. Essentials of Commerce in East Africa. 5th ed. Cassell publishing limited, 1985.