APA引文

Miller, J. (2006). National Geographic almanac of American history. Washington, D.C: National Geographic.

Trích dẫn kiểu Chicago

Miller, James. National Geographic Almanac of American History. Washington, D.C: National Geographic, 2006.

MLA引文

Miller, James. National Geographic Almanac of American History. Washington, D.C: National Geographic, 2006.

警告：這些引文格式不一定是100％准確.