APA

Welsh D., . (1981). The History of theVietnam war. London: Bison Books.

Chicago

Welsh Douglas, . 1981. The History of theVietnam war. London: Bison Books.

Harvard

Welsh D., . (1981). The History of theVietnam war. London: Bison Books.

MLA

Welsh Douglas, . The History of theVietnam war. London: Bison Books. 1981.