APA استشهاد

Freese, P. (1994). MS-Dos: Up to and including version 6.2. Prisma computer course.

استشهاد بنمط شيكاغو

Freese, Peter. MS-Dos: Up to and Including Version 6.2. Britain: Prisma computer course, 1994.

MLA استشهاد

Freese, Peter. MS-Dos: Up to and Including Version 6.2. Prisma computer course, 1994.