FIREFLY BOOKS. (2012). FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS.
芝加哥风格引文FIREFLY BOOKS. FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS, 2012.
MLA引文FIREFLY BOOKS. FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS, 2012.
警告：这些引文格式不一定是100％准确.