Newbold, K. B. (2017). Population Geography: Tools and Issues (3rd ed.). Rowman & Littlefield.
Citazione stile Chigago Style (17a edizione)Newbold, K. Bruce. Population Geography: Tools and Issues. 3rd ed. London.: Rowman & Littlefield, 2017.
Citatione MLA (9a ed.)Newbold, K. Bruce. Population Geography: Tools and Issues. 3rd ed. Rowman & Littlefield, 2017.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.