(美)Robert Slater著 (美) Robert Clair著 (美)Robert E.Walters等著 (美)Robert G.Gallager著 (美)Robert F. Weaver著 (加)Robert Penner著 (美)Robert Ian Oliver著 (美)Robert L.Ziegler著 (美) Brent Laster著 (美)Herb Sutter著