APA-viite (7. p.)

(1980). Technical specifications of a proposed Federal Information Processing Standard on the modes of operation for the Data Encryption Standard / Michael J. O'Brien.

Chicago-viite (17. p.)

Technical Specifications of a Proposed Federal Information Processing Standard on the Modes of Operation for the Data Encryption Standard / Michael J. O'Brien. 1980.

MLA-viite (9. p.)

Technical Specifications of a Proposed Federal Information Processing Standard on the Modes of Operation for the Data Encryption Standard / Michael J. O'Brien. 1980.

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