APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.