Bunnett, R. B. (1975). Physical geography in diagrams (Metric ed. with objective exercises, New ed.). Longman.
Chicago-Zitierstil (17. Ausg.)Bunnett, R. B. Physical Geography in Diagrams. Metric ed. with objective exercises, New ed. London: Longman, 1975.
MLA-Zitierstil (8. Ausg.)Bunnett, R. B. Physical Geography in Diagrams. Metric ed. with objective exercises, New ed. Longman, 1975.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.