O'Hara. (1997). Nature facts. London: DK Pub.
Chicago Style CitationO'Hara. Nature Facts. London: DK Pub, 1997.
MLA引文O'Hara. Nature Facts. London: DK Pub, 1997.
警告：这些引文格式不一定是100％准确.
APA引文
O'Hara. (1997). Nature facts. London: DK Pub.
Chicago Style CitationO'Hara. Nature Facts. London: DK Pub, 1997.
MLA引文O'Hara. Nature Facts. London: DK Pub, 1997.