LONGMAN ORIENT. (1988). BASIC TOOLS. ORIENT LONGMAN.
Cita Chicago (17th ed.)LONGMAN ORIENT. BASIC TOOLS. LUCKNOW: ORIENT LONGMAN, 1988.
Cita MLA (9th ed.)LONGMAN ORIENT. BASIC TOOLS. ORIENT LONGMAN, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.