Perry, G., Cazzola, M., & Fulton, J. OpenOffice.org2, Firefox and Thunderbird for Windows. Sams Publishim.
Čikaški stil citiranja (17. izdanje)Perry, Greg, M.T Cazzola, i Jennifer Fulton. OpenOffice.org2, Firefox and Thunderbird for Windows. Estados Unidos de América: Sams Publishim.
MLA način citiranja (9. izdanje)Perry, Greg, et al. OpenOffice.org2, Firefox and Thunderbird for Windows. Sams Publishim.
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