Cita APA

Groff, J. R., & Weiberg, P. N. (1983). Understanding <UNIX>: A conceptual guide. IBT.

Citación estilo Chicago

Groff, James R., and Paul N. Weiberg. Understanding <UNIX>: A Conceptual Guide. Delhi: IBT, 1983.

Cita MLA

Groff, James R., and Paul N. Weiberg. Understanding <UNIX>: A Conceptual Guide. IBT, 1983.