Dyfyniad APA

HALSALL FRED. (1989). DATA COMMUNICATIONS; COMPUTER NETWORKS AND OSI (2ND.). ADDISON-WESLEY.

Dyfyniad Arddull Chicago

HALSALL FRED. DATA COMMUNICATIONS; COMPUTER NETWORKS AND OSI. 2ND. ENGLAND: ADDISON-WESLEY, 1989.

Dyfyniad MLA

HALSALL FRED. DATA COMMUNICATIONS; COMPUTER NETWORKS AND OSI. 2ND. ADDISON-WESLEY, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.