Pitzl, G. R. (2003). Geography 03/04. Guilford: McGraw-Hill/Dushkin.
Trích dẫn kiểu ChicagoPitzl, Gerald R. Geography 03/04. Guilford: McGraw-Hill/Dushkin, 2003.
MLA引文Pitzl, Gerald R. Geography 03/04. Guilford: McGraw-Hill/Dushkin, 2003.
警告：这些引文格式不一定是100％准确.