Lua APA (7ú heag.)
Montello, D. R., & Sutton, P. C. (2013). An introduction to scientific research methods in geography & environmental studies (2nd ed.). SAGE.
Lua i Stíl Chicago (17ú heag.)
Montello, Daniel R., agus Paul C. Sutton. An Introduction to Scientific Research Methods in Geography & Environmental Studies. 2nd ed. London Thousand Oaks, Calif: SAGE, 2013.
Lua MLA (9ú heag.)
Montello, Daniel R., agus Paul C. Sutton. An Introduction to Scientific Research Methods in Geography & Environmental Studies. 2nd ed. SAGE, 2013.
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