APA استشهاد

Ashley, R., & Frnandez, J. N. (1990). Teach yourself UNIX. BPB.

استشهاد بنمط شيكاغو

Ashley, Ruth, و Judi N. Frnandez. Teach Yourself UNIX. New Delhi: BPB, 1990.

MLA استشهاد

Ashley, Ruth, و Judi N. Frnandez. Teach Yourself UNIX. BPB, 1990.