Haiduk, P. H. (1991). Increasing Your Productivity Lotus 1-2-3 Release 2.3 / H.paul Haiduk & Paul W. Ross. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Haiduk, Paul H. Increasing Your Productivity Lotus 1-2-3 Release 2.3 / H.paul Haiduk & Paul W. Ross. McGraw-Hill, 1991.
Lua MLA (8ú heag.)Haiduk, Paul H. Increasing Your Productivity Lotus 1-2-3 Release 2.3 / H.paul Haiduk & Paul W. Ross. McGraw-Hill, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.