APA (7e ed.) Bronvermelding
McKnight, T. L., & Lindgren, P. C. (1993). Physical geography: A landscape appreciation (4thd ed.). Prentice-Hall.
Chicago (17e ed.) Bronvermelding
McKnight, Tom L., en Patricia Caldwell Lindgren. Physical Geography: A Landscape Appreciation. 4thd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1993.
MLA (9e ed.) Bronvermelding
McKnight, Tom L., en Patricia Caldwell Lindgren. Physical Geography: A Landscape Appreciation. 4thd ed. Prentice-Hall, 1993.
Let op: Deze citaties zijn niet altijd 100% accuraat.