Siever, E., Patwardhan, N., & Spainhour, S. (1999). Perl in a nutshell: Desktop quick reference (First edition.). O'Reilly.

Siever, Ellen, Nate Patwardhan, and Stephen Spainhour. Perl in a Nutshell: Desktop Quick Reference. First edition. Beijing: O'Reilly, 1999.

Siever, Ellen, et al. Perl in a Nutshell: Desktop Quick Reference. First edition. O'Reilly, 1999.