Montello, D. R., & Sutton, P. C. (2013). An introduction to scientific research methods in geography and environmental studies (2a. ed.). Sage.
Cita Chicago (17th ed.)Montello, Daniel R., i Paul C. Sutton. An Introduction to Scientific Research Methods in Geography and Environmental Studies. 2a. ed. Londres: Sage, 2013.
Cita MLA (9th ed.)Montello, Daniel R., i Paul C. Sutton. An Introduction to Scientific Research Methods in Geography and Environmental Studies. 2a. ed. Sage, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.