Cita APA (7a ed.)

Sin autor. (2000). Powerprep software [CD-ROM]: Preparation for the computer-based TOEFL test. [S.n.].

Cita Chicago Style (17a ed.)

Sin autor. Powerprep Software [CD-ROM]: Preparation for the Computer-based TOEFL Test. Princeton: [S.n.], 2000.

Cita MLA (9a ed.)

Sin autor. Powerprep Software [CD-ROM]: Preparation for the Computer-based TOEFL Test. [S.n.], 2000.