APA引文

United States. Forest Service. (1950). How forest conditions affected the 1948 Columbia flood. U.S. Gov. Print. Off..

Chicago Style (17th ed.) Citation

United States. Forest Service. How Forest Conditions Affected the 1948 Columbia Flood. Washington: U.S. Gov. Print. Off., 1950.

MLA引文

United States. Forest Service. How Forest Conditions Affected the 1948 Columbia Flood. U.S. Gov. Print. Off., 1950.

警告：這些引文格式不一定是100％准確.