APA (7th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.). (1990). Understanding GIS: The ARC/INFO method : self-study workbook : PC version. GeoInformation International.

Chicago Style (17th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.). Understanding GIS: The ARC/INFO Method : Self-study Workbook : PC Version. Cambridge [UK]: GeoInformation International, 1990.

MLA (9th ed.) Citation

Environmental Systems Research Institute (Redlands, Calif.). Understanding GIS: The ARC/INFO Method : Self-study Workbook : PC Version. GeoInformation International, 1990.

Warning: These citations may not always be 100% accurate.