Philippines (Republic) Budget Commission Management Service. (1958). Handbook on mail operations. s.n.].
Citazione stile Chigago Style (17a edizione)Philippines (Republic) Budget Commission Management Service. Handbook on Mail Operations. [Manila: s.n.], 1958.
Citatione MLA (9a ed.)Philippines (Republic) Budget Commission Management Service. Handbook on Mail Operations. s.n.], 1958.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.