Selby Bateman. «GEM: A New Look For IBM And Atari» (en anglès). Compute!, 01-05-1985. [Consulta: 16 febrer 2010]. «What looks and acts like an Apple Macintosh, runs on IBM and Atari ST computers, and may help alter the face of computing? The answer is an operating system interface called GEM, the Graphics Environment Manager, which Digital Research hopes will foster a new standard for the way we work with computers.»
