(2017). Training manual: NHA standard housing models. National Housing Authority.
Chicago-referens (17:e uppl.)Training Manual: NHA Standard Housing Models. Diliman, Quezon City: National Housing Authority, 2017.
MLA-referens (9:e uppl.)Training Manual: NHA Standard Housing Models. National Housing Authority, 2017.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.