APA (7th ed.) Citation

Simpson, A. (1993). Mastering wordperfected 6 for Dos. BPB.pub.

Chicago Style (17th ed.) Citation

Simpson, Alan. Mastering Wordperfected 6 for Dos. New Delhi: BPB.pub, 1993.

MLA (9th ed.) Citation

Simpson, Alan. Mastering Wordperfected 6 for Dos. BPB.pub, 1993.