Cita APA (7th ed.)
Lo, C. P., & Yeung, A. K. W. (2002). Concepts and techniques of geographic information systems. Prentice Hall.
Cita Chicago (17th ed.)
Lo, C. P., i Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. Upper Saddle River, NJ: Prentice Hall, 2002.
Cita MLA (9th ed.)
Lo, C. P., i Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. Prentice Hall, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.