Held, G. (1996). Understanding Data communications (4th.). P H I.
Chicagoスタイル(17版)引用形式Held, Gilbert. Understanding Data Communications. 4th. New Delhi: P H I, 1996.
MLA(9版)引用形式Held, Gilbert. Understanding Data Communications. 4th. P H I, 1996.
警告: この引用は必ずしも正確ではありません.