Cita APA (7a ed.)

(1889). Map of Washington showing the distribution of red fir. U.S. Geological Survey.

Cita Chicago Style (17a ed.)

Map of Washington Showing the Distribution of Red Fir. Washington, D.C.: U.S. Geological Survey, 1889.

Cita MLA (8a ed.)

Map of Washington Showing the Distribution of Red Fir. U.S. Geological Survey, 1889.

Precaución: Estas citas no son 100% exactas.