APA (7e ed.) Bronvermelding

Trewartha, G. T. (1977). Fundamentals of physical geography (3rd ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Trewartha, Glenn Thomas. Fundamentals of Physical Geography. 3rd ed. New York: McGraw-Hill, 1977.

MLA (9e ed.) Bronvermelding

Trewartha, Glenn Thomas. Fundamentals of Physical Geography. 3rd ed. McGraw-Hill, 1977.