APA引文

Phillips, S. W. (2002). The US Geological Survey and the Chesapeake Bay. US Geological Survey circular 1220.

Chicago Style Citation

Phillips, Scott W. "The US Geological Survey and the Chesapeake Bay." US Geological Survey Circular 1220 2002.

MLA引文

Phillips, Scott W. "The US Geological Survey and the Chesapeake Bay." US Geological Survey Circular 1220 2002.

警告：这些引文格式不一定是100％准确.