Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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