Philippines. National Statistical Coordination Board. (1992). Philippine standard occupational classification, 1992. National Statistical Coordination Board.
Citazione stile Chigago Style (17a edizione)Philippines. National Statistical Coordination Board. Philippine Standard Occupational Classification, 1992. Makati, Metro Manila: National Statistical Coordination Board, 1992.
Citatione MLA (9a ed.)Philippines. National Statistical Coordination Board. Philippine Standard Occupational Classification, 1992. National Statistical Coordination Board, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.