APA (7th ed.) Citation

Randal, A., Sugalski, D., & Tötsch, L. (2003). Perl 6 essentials. O'Reilly.

Chicago Style (17th ed.) Citation

Randal, Allison, Dan Sugalski, and Leopold Tötsch. Perl 6 Essentials. Sebastopol, Calif.: O'Reilly, 2003.

MLA (8th ed.) Citation

Randal, Allison, et al. Perl 6 Essentials. O'Reilly, 2003.