APA (7th ed.) Citation

Smith, L. S. (1984). The HP 150 user's guide. H.W. Sams.

Chicago Style (17th ed.) Citation

Smith, Leslie S. The HP 150 User's Guide. Indianapolis, Ind.: H.W. Sams, 1984.

MLA (9th ed.) Citation

Smith, Leslie S. The HP 150 User's Guide. H.W. Sams, 1984.