Cita APA (7th ed.)

Strahler, A. N., & Strahler, A. H. (1997). Student Exercise Manual to Accompany Physical Geography: Science and Systems of the Human Environment. John Wiley & Sons, Inc.

Cita Chicago (17th ed.)

Strahler, Arthur N., i Alan H. Strahler. Student Exercise Manual to Accompany Physical Geography: Science and Systems of the Human Environment. New York: John Wiley & Sons, Inc, 1997.

Cita MLA (9th ed.)

Strahler, Arthur N., i Alan H. Strahler. Student Exercise Manual to Accompany Physical Geography: Science and Systems of the Human Environment. John Wiley & Sons, Inc, 1997.