Cita APA (7a ed.)

Kernighan, B. W., & Plauger, J. P. (1976). Software tools. [S.n.].

Cita Chicago Style (17a ed.)

Kernighan, Brian W., y J. P. Plauger. Software Tools. Reading: [S.n.], 1976.

Cita MLA (9a ed.)

Kernighan, Brian W., y J. P. Plauger. Software Tools. [S.n.], 1976.