Philippine Social Institute & Federation of Free Workers (Philippines). (1990). Philippine Social Institute: The educational arm of the Federation of Free Workers. Philippine Social Institute, Federation of Free Workers.
Citazione stile Chigago Style (17a edizione)Philippine Social Institute e Federation of Free Workers (Philippines). Philippine Social Institute: The Educational Arm of the Federation of Free Workers. Manila: Philippine Social Institute, Federation of Free Workers, 1990.
Citatione MLA (9a ed.)Philippine Social Institute e Federation of Free Workers (Philippines). Philippine Social Institute: The Educational Arm of the Federation of Free Workers. Philippine Social Institute, Federation of Free Workers, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.