Cita APA (7th ed.)

Mcknight, T. L. (1990). Physical geography: A landscape appreciation (3rd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Mcknight, Tom L. Physical Geography: A Landscape Appreciation. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1990.

Cita MLA (9th ed.)

Mcknight, Tom L. Physical Geography: A Landscape Appreciation. 3rd ed. Prentice-Hall, 1990.