Cita APA (7th ed.)

Edited by Onsrud , H. (1999). Geographic information research. Taylor and Francis.

Cita Chicago (17th ed.)

Edited by Onsrud , Harlan. Geographic Information Research. London: Taylor and Francis, 1999.

Cita MLA (9th ed.)

Edited by Onsrud , Harlan. Geographic Information Research. Taylor and Francis, 1999.