DOLPHIN. (1999). GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS.
芝加哥风格引文DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.
MLA引文DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.
警告：这些引文格式不一定是100％准确.
APA引文
DOLPHIN. (1999). GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS.
芝加哥风格引文DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.
MLA引文DOLPHIN. GENERAL KNOWLEDGE 2000 QUESTION AND ANSWERS. 1999.