Cita APA (7a ed.)

Olsen, E. (2014). Windows 8.1: New features. Infinite Skills.

Cita Chicago Style (17a ed.)

Olsen, Erin. Windows 8.1: New Features. [Place of publication not identified]: Infinite Skills, 2014.

Cita MLA (8a ed.)

Olsen, Erin. Windows 8.1: New Features. Infinite Skills, 2014.