APA (7e ed.) Bronvermelding
Johnson, D. L. (2015). World regional geography: A development approach (11th ed.). Pearson Education.
Chicago (17e ed.) Bronvermelding
Johnson, Douglas L. World Regional Geography: A Development Approach. 11th ed. Boston: Pearson Education, 2015.
MLA (9e ed.) Bronvermelding
Johnson, Douglas L. World Regional Geography: A Development Approach. 11th ed. Pearson Education, 2015.
Let op: Deze citaties zijn niet altijd 100% accuraat.