Cita APA (7a ed.)

Ferguson, G., & Ferguson, J. (1991). Walks of the Pacific Northwest. Prentice Hall.

Cita Chicago Style (17a ed.)

Ferguson, Gary, y Jane Ferguson. Walks of the Pacific Northwest. New York: Prentice Hall, 1991.

Cita MLA (8a ed.)

Ferguson, Gary, y Jane Ferguson. Walks of the Pacific Northwest. Prentice Hall, 1991.

Precaución: Estas citas no son 100% exactas.