Lemay, L. (1999). Sams teach yourself Perl in 21 days. Sams Pub. ; techmedia.
芝加哥风格引文Lemay, Laura. Sams Teach Yourself Perl in 21 Days. Indianapolis, Ind. : New Delhi: Sams Pub. ; techmedia, 1999.
MLA引文Lemay, Laura. Sams Teach Yourself Perl in 21 Days. Sams Pub. ; techmedia, 1999.
警告：这些引文格式不一定是100％准确.