Cita APA (7a ed.)
McKnight, T. L., & Lindgren, P. C. (1993). Physical geography: A landscape appreciation (4thd ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)
McKnight, Tom L., y Patricia Caldwell Lindgren. Physical Geography: A Landscape Appreciation. 4thd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1993.
Cita MLA (9a ed.)
McKnight, Tom L., y Patricia Caldwell Lindgren. Physical Geography: A Landscape Appreciation. 4thd ed. Prentice-Hall, 1993.
Precaución: Estas citas no son 100% exactas.