Gordon Freeman
Gordon Freeman adalah karakter fiksi, protagonis utama seri permainan video Half-Life.

Referensi 

 Mitchell, Heather. Half-Life instruction manual. Valve Software, 1998.
 Hodgson, David. Half-Life 2: Prima Official Game Guide. Prima Games, 2004. ISBN 0-7615-4362-7.
 Hodgson, David. Half-Life 2: Raising the Bar. Prima Games, 2004. ISBN 0-7615-4364-3.

Pranala luar 
 Story overview of Half-Life 

Karakter Half-Life