Fellmann, J., & Getis, A. (1997). Human geography: Landscapes of human activities (5th ed.). McGraw-hill.
Cita Chicago (17th ed.)Fellmann, Jerome, i Arthur Getis. Human Geography: Landscapes of Human Activities. 5th ed. Boston: McGraw-hill, 1997.
Cita MLA (9th ed.)Fellmann, Jerome, i Arthur Getis. Human Geography: Landscapes of Human Activities. 5th ed. McGraw-hill, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.