APA-referens

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

Chicago-stil citat

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

MLA-referens

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