American Psychological Association 6th edition

Mason, T., & Brown, D. [ca. 1991]. Lex & yacc. In UNIX programming tools (2. print., minor revisions) [Book]. Sebastopol, Calif.: O’Reilly.

ISO-690 (author-date, English)

MASON, Tony and BROWN, Doug, 1991. Lex & yacc. 2. print., minor revisions. Sebastopol, Calif.: O’Reilly. ISBN 0937175498.

Modern Language Association 9th edition

Mason, T., and D. Brown. “Lex & yacc”. UNIX programming tools, 2. print., minor revisions, book, O’Reilly, 1991.

Mohr Siebeck - Recht (Deutsch - Österreich)

Mason, Tony/Brown, Doug: Lex & yacc, 2. print., minor revisions. ed. Sebastopol, Calif. 1991.

Emerald - Harvard

Mason, T. and Brown, D. (1991), Lex & yacc, UNIX programming tools, 2. print., minor revisions., Vol. , O’Reilly, Sebastopol, Calif.

Warning: These citations may not always be 100% accurate.