Cita APA (7th ed.)

Robbins, J. (1990). Mastering dos (2nd ed.). Perfect Bound.

Cita Chicago (17th ed.)

Robbins, Judd. Mastering Dos. 2nd ed. Quezon City: Perfect Bound, 1990.

Cita MLA (9th ed.)

Robbins, Judd. Mastering Dos. 2nd ed. Perfect Bound, 1990.