Cita APA (7a ed.)

Gatrell, A. C., & Löytönen, M. (1998). GIS and helth. Taylor & Francis.

Cita Chicago Style (17a ed.)

Gatrell, Anthony C., y Markku Löytönen. GIS and Helth. London: Taylor & Francis, 1998.

Cita MLA (9a ed.)

Gatrell, Anthony C., y Markku Löytönen. GIS and Helth. Taylor & Francis, 1998.