(1989). Local government and population: Training modules. Bureau of Local Government Supervision.
Chicago-referens (17:e uppl.)Local Government and Population: Training Modules. Quezon City: Bureau of Local Government Supervision, 1989.
MLA-referens (9:e uppl.)Local Government and Population: Training Modules. Bureau of Local Government Supervision, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.