Till, D. (1998). Teach yourself PERL 5 in 21 days (with CD) (2nd ed.). Techmedia.
Stile di citazione ChicagoTill, David. Teach Yourself PERL 5 in 21 Days (with CD). 2nd ed. New Delhi: Techmedia, 1998.
Citazione MLATill, David. Teach Yourself PERL 5 in 21 Days (with CD). 2nd ed. Techmedia, 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.