American Water Works Association, American National Standards Institute, & ebrary, Inc. (2012). Granular activated carbon. American Water Works Association.
Chicago-referens (17:e uppl.)American Water Works Association, American National Standards Institute, och Inc ebrary. Granular Activated Carbon. [New York?]: American Water Works Association, 2012.
MLA-referens (9:e uppl.)American Water Works Association, et al. Granular Activated Carbon. American Water Works Association, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.