Cita APA (7th ed.)
(1998). LONGMAN active study dictionary (2d. ed.). Longman.
Cita Chicago (17th ed.)
LONGMAN Active Study Dictionary. 2d. ed. England: Longman, 1998.
Cita MLA (9th ed.)
LONGMAN Active Study Dictionary. 2d. ed. Longman, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.