Kartografiako elementuakArthur H. Robinson, Joel L. Morrison, Philip C. Muehrcke, A. Jon Kimerling, Stephan C. Guptill, Idoia Santamaría · First published 2007Open the Tome
Elements of spatial data qualityStephan C. Guptill, Joel L. Morrison, J. L. Morrison · First published 1995Open the Tome
A process for evaluating geographic information systemsStephan C. Guptill · First published 1988Open the Tome
A Process for Evaluating Geographic Information Systems,/Price and Availability List of Us Geological Survey Pubns, 1990,/Gd to Obtaining Usgs InfoStephan C. Guptill · First published 1988Open the Tome
