APA Edition Citation

Halsall,Fred. (1999). Data communications,computer networks and open systems (4th.). Pearson Education.

Chicago Edition Citation

Halsall,Fred. Data Communications,computer Networks and Open Systems. 4th. New Delhi: Pearson Education, 1999.

MLA Edition Citation

Halsall,Fred. Data Communications,computer Networks and Open Systems. 4th. Pearson Education, 1999.

Warning: These citations may not always be 100% accurate.