Engelmann. R. (1985). Small business management. Stellagraphics Ltd.
Cita Chicago (17th ed.)Engelmann. R. Small Business Management. Nairobi, Kenya: Stellagraphics Ltd, 1985.
Cita MLA (9th ed.)Engelmann. R. Small Business Management. Stellagraphics Ltd, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.