Cita APA (7a ed.)

GROFF JAMES R. (1983). UNDERSTANDING UNIX A CONCEPTUAL GUIDE. QUE CORPORATION.

Cita Chicago Style (17a ed.)

GROFF JAMES R. UNDERSTANDING UNIX A CONCEPTUAL GUIDE. INDIANA: QUE CORPORATION, 1983.

Cita MLA (9a ed.)

GROFF JAMES R. UNDERSTANDING UNIX A CONCEPTUAL GUIDE. QUE CORPORATION, 1983.