Cita APA (7th ed.)
Butt, S. (1985). Essentials of commerce in East Africa. Cassell.
Cita Chicago (17th ed.)
Butt, S.A. Essentials of Commerce in East Africa. London: Cassell, 1985.
Cita MLA (9th ed.)
Butt, S.A. Essentials of Commerce in East Africa. Cassell, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.