APA

Hutchinson S. E., Sawyer S. C. & Coulthard G. J. (1993). DOS 5.0. USA: IRWIN.

Chicago

Hutchinson S E, Sawyer S C and Coulthard G J. 1993. DOS 5.0. USA: IRWIN.

Harvard

Hutchinson S. E., Sawyer S. C. and Coulthard G. J. (1993). DOS 5.0. USA: IRWIN.

MLA

Hutchinson S E, Sawyer S C and Coulthard G J. DOS 5.0. USA: IRWIN. 1993.