APA (7th ed.) Citation

HELMS, H. L. Computer Language Reference Guide. Howard W. Sams & Co., Inc.

Chicago Style (17th ed.) Citation

HELMS, Harry L. Computer Language Reference Guide. Howard W. Sams & Co., Inc.

MLA (8th ed.) Citation

HELMS, Harry L. Computer Language Reference Guide. Howard W. Sams & Co., Inc.

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