APA (7th ed.) Citation

Boyles, D., & Harder, C. (2002). GIS means business. ESRI.

Chicago Style (17th ed.) Citation

Boyles, David, and Christian Harder. GIS Means Business. Redlands, Calif.: ESRI, 2002.

MLA (9th ed.) Citation

Boyles, David, and Christian Harder. GIS Means Business. ESRI, 2002.