Kuehn, R. A. (1975). Cost-effective telecommunications. AMACOM, A Division of American Management Associations.
Cita Chicago (17th ed.)Kuehn, Richard A. Cost-effective Telecommunications. New York: AMACOM, A Division of American Management Associations, 1975.
Cita MLA (9th ed.)Kuehn, Richard A. Cost-effective Telecommunications. AMACOM, A Division of American Management Associations, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.