(1987). Pascal: Programming and problem solving / Sanford Leestma, Larry Nyhoff.
Čikaški stil citiranja (17. izdanje)Pascal: Programming and Problem Solving / Sanford Leestma, Larry Nyhoff. 1987.
MLA način citiranja (9. izdanje)Pascal: Programming and Problem Solving / Sanford Leestma, Larry Nyhoff. 1987.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.