Cita APA (7th ed.)

Lo, C. P., & Yeung, A. K. W. (2005). Concepts and techniques of geographic information systems. Prentice-Hall of India Private Limited.

Cita Chicago (17th ed.)

Lo, C. P., i Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. New Delhi: Prentice-Hall of India Private Limited, 2005.

Cita MLA (9th ed.)

Lo, C. P., i Albert K. W. Yeung. Concepts and Techniques of Geographic Information Systems. Prentice-Hall of India Private Limited, 2005.