APA

Howard (Michael) ;Louis (Wm Roger), .The Oxford History Of The 20th Century. : .

Chicago

Howard (Michael) ;Louis (Wm Roger), .The Oxford History Of The 20th Century. : .

Harvard

Howard (Michael) ;Louis (Wm Roger), .The Oxford History Of The 20th Century. : .

MLA

Howard (Michael) ;Louis (Wm Roger), .: . .