APA引文

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引文

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

警告：这些引文格式不一定是100％准确.