BRITANICA DISCOVERY LIB. (1997). THE WORDS BOOK VOL 6.
Cita Chicago (17th ed.)BRITANICA DISCOVERY LIB. THE WORDS BOOK VOL 6. 1997.
Cita MLA (9th ed.)BRITANICA DISCOVERY LIB. THE WORDS BOOK VOL 6. 1997.
Atenció: Aquestes cites poden no estar 100% correctes.