APA-čujuhus (7. p.)
Kappeler, P., & Hänninen, P. (2004). zSeries Trusted Key Entry (TKE) version 4.2 update. IBM, International Technical Support Organization.
Chicago-čujuhus (17. p.)
Kappeler, Patrick, juo Pekka Hänninen. ZSeries Trusted Key Entry (TKE) Version 4.2 Update. [S.l.]: IBM, International Technical Support Organization, 2004.
MLA-čujuhus (9. p.)
Kappeler, Patrick, juo Pekka Hänninen. ZSeries Trusted Key Entry (TKE) Version 4.2 Update. IBM, International Technical Support Organization, 2004.
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