APA (7th ed.) Citation

Prochnow, D. (1987). The GEM operating system handbook: For IBM PCs, PC compatibles and ATARI ST (1. ed., 1. print.). TAB Books.

Chicago Style (17th ed.) Citation

Prochnow, Dave. The GEM Operating System Handbook: For IBM PCs, PC Compatibles and ATARI ST. 1. ed., 1. print. Blue Ridge Summit, PA: TAB Books, 1987.

MLA (9th ed.) Citation

Prochnow, Dave. The GEM Operating System Handbook: For IBM PCs, PC Compatibles and ATARI ST. 1. ed., 1. print. TAB Books, 1987.