Bullough, R. V., & Beatty, L. F. (1991). Classroom applications of microcomputers (2nd ed.). Merrill.
Cita Chicago (17th ed.)Bullough, Robert V., i LaMond F. Beatty. Classroom Applications of Microcomputers. 2nd ed. New York: Merrill, 1991.
Cita MLA (9th ed.)Bullough, Robert V., i LaMond F. Beatty. Classroom Applications of Microcomputers. 2nd ed. Merrill, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.