Cita APA

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

Chicago Edition Citation

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

Cita MLA

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