International Business Machines Corporation. International Technical Support Organization, ebrary, Inc, & Rayns, C. (2004). IBM eserver zSeries 990 (z990) cryptography implementation. IBM, International Technical Support Organization.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInternational Business Machines Corporation. International Technical Support Organization, Inc ebrary, এবং Chris Rayns. IBM Eserver ZSeries 990 (z990) Cryptography Implementation. Poughkeepsie, NY: IBM, International Technical Support Organization, 2004.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিInternational Business Machines Corporation. International Technical Support Organization, et al. IBM Eserver ZSeries 990 (z990) Cryptography Implementation. IBM, International Technical Support Organization, 2004.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.