Cita APA (7a ed.)

Schwartz, S. H., Spring, B., & Spring, I. (1983). Nature in the Northwest: An introduction to the natural history and ecology of the northwestern United States from the Rockies to the Pacific. Prentice-Hall.

Cita Chicago Style (17a ed.)

Schwartz, Susan H., Bob Spring, y Ira Spring. Nature in the Northwest: An Introduction to the Natural History and Ecology of the Northwestern United States from the Rockies to the Pacific. Englewood Cliffs, N.J.: Prentice-Hall, 1983.

Cita MLA (8a ed.)

Schwartz, Susan H., et al. Nature in the Northwest: An Introduction to the Natural History and Ecology of the Northwestern United States from the Rockies to the Pacific. Prentice-Hall, 1983.

Precaución: Estas citas no son 100% exactas.