APA (7th ed.) Citation
Kappeler, P., & Hänninen, P. (2004). zSeries Trusted Key Entry (TKE) version 4.2 update. IBM, International Technical Support Organization.
Chicago Style (17th ed.) Citation
Kappeler, Patrick, and Pekka Hänninen. ZSeries Trusted Key Entry (TKE) Version 4.2 Update. [S.l.]: IBM, International Technical Support Organization, 2004.
MLA (9th ed.) Citation
Kappeler, Patrick, and Pekka Hänninen. ZSeries Trusted Key Entry (TKE) Version 4.2 Update. IBM, International Technical Support Organization, 2004.
Warning: These citations may not always be 100% accurate.