GRAY JOHN. (2003). MEN ARE FROM MARS,WOMEN ARE FROM VENUS. HARPER COLLINS PUBLISHERS.
Chicago-referens (17:e uppl.)GRAY JOHN. MEN ARE FROM MARS,WOMEN ARE FROM VENUS. NEW DELHI: HARPER COLLINS PUBLISHERS, 2003.
MLA-referens (9:e uppl.)GRAY JOHN. MEN ARE FROM MARS,WOMEN ARE FROM VENUS. HARPER COLLINS PUBLISHERS, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.