APA

Thorpe (Edgar) ;Thorpe (Showick), . (1997). General Knowledge Manual 1998 Ed. : .

Chicago

Thorpe (Edgar) ;Thorpe (Showick), . 1997. General Knowledge Manual 1998 Ed. : .

Harvard

Thorpe (Edgar) ;Thorpe (Showick), . (1997). General Knowledge Manual 1998 Ed. : .

MLA

Thorpe (Edgar) ;Thorpe (Showick), . General Knowledge Manual 1998 Ed. : . 1997.