Philippine Printing Technical Foundation. (1974). Graphic arts directory: A listing of suppliers and services. s.n.
Citazione stile Chigago Style (17a edizione)Philippine Printing Technical Foundation. Graphic Arts Directory: A Listing of Suppliers and Services. [Manila: s.n, 1974.
Citatione MLA (9a ed.)Philippine Printing Technical Foundation. Graphic Arts Directory: A Listing of Suppliers and Services. s.n, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.