Gaya APA

Wiersema, M, T, &, F. (1995). The discipline of market leaders : " A common- sense map toward market leadership." the washington post ; choose your customer narrow your fokus, dominate your market. . Canada: Addion-esley Publishing Company.

Gaya MLA

Wiersema, Michael, Treacy, &, Fred. "The discipline of market leaders : " A common- sense map toward market leadership." the washington post ; choose your customer narrow your fokus, dominate your market.". Canada: Addion-esley Publishing Company, 1995. Text.