Cita APA (7th ed.)

Groff, J. R., & Weinberg, P. N. (1992). Understanding Unix: A conceptual guide (2nd ed.). Que Corporation.

Cita Chicago (17th ed.)

Groff, James R., i Paul N. Weinberg. Understanding Unix: A Conceptual Guide. 2nd ed. Carmel, IN: Que Corporation, 1992.

Cita MLA (9th ed.)

Groff, James R., i Paul N. Weinberg. Understanding Unix: A Conceptual Guide. 2nd ed. Que Corporation, 1992.