van Brakel, P. A., & Pienaar, M. (1997). Geographic Information Systems: How a World Wide Web Presence Can Improve Their Availability.
Chicago Style (17th ed.) Citationvan Brakel, Pieter A., and Martie Pienaar. Geographic Information Systems: How a World Wide Web Presence Can Improve Their Availability. 1997.
MLA (9th ed.) Citationvan Brakel, Pieter A., and Martie Pienaar. Geographic Information Systems: How a World Wide Web Presence Can Improve Their Availability. 1997.
Warning: These citations may not always be 100% accurate.