Cita APA (7th ed.)

DUNCAN RAY. (1988). ADVANCED MSDOS (2ND.). MICROSOFT.

Cita Chicago (17th ed.)

DUNCAN RAY. ADVANCED MSDOS. 2ND. U S A: MICROSOFT, 1988.

Cita MLA (9th ed.)

DUNCAN RAY. ADVANCED MSDOS. 2ND. MICROSOFT, 1988.