APA
(1999). Philwater '99. Angeles City, Pampanga: Philippine Water Works Association, Inc.
Chicago
1999. Philwater '99. Angeles City, Pampanga: Philippine Water Works Association, Inc.
Harvard
(1999). Philwater '99. Angeles City, Pampanga: Philippine Water Works Association, Inc.
MLA
Philwater '99. Angeles City, Pampanga: Philippine Water Works Association, Inc. 1999.
