Institute of National Language & Philippines Institute of National Language. (1978). Programs of the Institute of National Language. The Institute.
Citazione stile Chigago Style (17a edizione)Institute of National Language e Philippines Institute of National Language. Programs of the Institute of National Language. Manila: The Institute, 1978.
Citatione MLA (9a ed.)Institute of National Language e Philippines Institute of National Language. Programs of the Institute of National Language. The Institute, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.