FIREFLY BOOKS. (2013). FIREFLY ENVIRONMENTAL STUDIES AN ACTIVITY BASED BOOK- A. FIREFLY BOOKS.
芝加哥风格引文FIREFLY BOOKS. FIREFLY ENVIRONMENTAL STUDIES AN ACTIVITY BASED BOOK- A. FIREFLY BOOKS, 2013.
MLA引文FIREFLY BOOKS. FIREFLY ENVIRONMENTAL STUDIES AN ACTIVITY BASED BOOK- A. FIREFLY BOOKS, 2013.
警告：这些引文格式不一定是100％准确.