Norton, P., & Wilton, R. (1989). The new Peter Norton programmer's guide to the IBM PC & PS/2. World Wide Software & Pub. House.
Chicago Style (17th ed.) CitationNorton, Peter, and Richard Wilton. The New Peter Norton Programmer's Guide to the IBM PC & PS/2. Quezon City: World Wide Software & Pub. House, 1989.
MLA (9th ed.) CitationNorton, Peter, and Richard Wilton. The New Peter Norton Programmer's Guide to the IBM PC & PS/2. World Wide Software & Pub. House, 1989.
Warning: These citations may not always be 100% accurate.