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1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   K&R
      <publication> Kernighan and Ritchie.  Brian Kernighan and
      Dennis Ritchie's book, cited below, describing the basis of
      K&R C, especially the classic and influential first edition.
      Synonyms: White Book, Old Testament.  See also New
    Testament.
      [Jargon File]
      [Brian Kernighan, Dennis Ritchie, "The C Programming
      Language", Prentice-Hall 1978; ISBN 0-113-110163-3].
      (2011-11-30)