Cita APA (7th ed.)
Lo, C. P., & Yeung, A. K. W. (2007). Concepts and techniques of geographic information systems (2nd ed.). Pearson Prentice Hall; PHI Learning.
Cita Chicago (17th ed.)
Lo, C. P., i 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.
Cita MLA (9th ed.)
Lo, C. P., i Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. 2nd ed. Pearson Prentice Hall; PHI Learning, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.