DOLPHIN. (1999). GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS.
Cita Chicago (17th ed.)DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.
Cita MLA (9th ed.)DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.