Lua APA (7ú heag.)
Lo, C. P., & Yeung, A. K. W. (2007). Concepts and techniques of geographic information systems (2nd ed.). Pearson Prentice Hall; PHI Learning.
Lua i Stíl Chicago (17ú heag.)
Lo, C. P., agus Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. 2nd ed. Upper Saddle River, NJ ; New Delhi: Pearson Prentice Hall; PHI Learning, 2007.
Lua MLA (9ú heag.)
Lo, C. P., agus Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. 2nd ed. Pearson Prentice Hall; PHI Learning, 2007.
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