Lua APA (7ú heag.)

Cromley, E. K., & McLafferty, S. (2002). GIS and public health. Guilford Press.

Lua i Stíl Chicago (17ú heag.)

Cromley, Ellen K., agus Sara McLafferty. GIS and Public Health. New York: Guilford Press, 2002.

Lua MLA (8ú heag.)

Cromley, Ellen K., agus Sara McLafferty. GIS and Public Health. Guilford Press, 2002.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.