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