Venter, D. J., Hough, J., Neuland, E. W., Erwee, R., & De Lange, R. (2007). Global business: Environments and strategies : managing for global competitive advantage (3rd ed.). Cape Town: Oxford University Press Southern Africa.

Venter, Daniel Johannes., Johan Hough, E. W. Neuland, Ronel Erwee, and Riaan De Lange. Global Business: Environments and Strategies : Managing for Global Competitive Advantage. 3rd ed. Cape Town: Oxford University Press Southern Africa, 2007.

Venter, Daniel Johannes., et al. Global Business: Environments and Strategies : Managing for Global Competitive Advantage. 3rd ed. Cape Town: Oxford University Press Southern Africa, 2007.