Ibrado, A. J. N. POEtent Perl (Part 1 of 3): Perl multitasking made easy. PC World Philippines.
芝加哥风格引文Ibrado, Alex Jonathan N. "POEtent Perl (Part 1 of 3): Perl Multitasking Made Easy." PC World Philippines .
MLA引文Ibrado, Alex Jonathan N. "POEtent Perl (Part 1 of 3): Perl Multitasking Made Easy." PC World Philippines, .
警告：这些引文格式不一定是100％准确.