Wall, L., & Schwartz, R. L. (1991). Programming Perl. O'Reilly.
Chicago Style (17th ed.) CitationWall, Larry, and Randal L. Schwartz. Programming Perl. Sebastopol, Calif: O'Reilly, 1991.
MLA (9th ed.) CitationWall, Larry, and Randal L. Schwartz. Programming Perl. O'Reilly, 1991.
Warning: These citations may not always be 100% accurate.