(1991). 1991 collective bargaining agreement survey. Personnel Management Association of the Philippines.
Citazione stile Chigago Style (17a edizione)1991 Collective Bargaining Agreement Survey. Manila: Personnel Management Association of the Philippines, 1991.
Citatione MLA (9a ed.)1991 Collective Bargaining Agreement Survey. Personnel Management Association of the Philippines, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.