Beltran, G. S. (1982). Exports of the Philippines: An analysis of demand and supply factors. s.n.].
Citazione stile Chigago Style (17a edizione)Beltran, Gil S. Exports of the Philippines: An Analysis of Demand and Supply Factors. [S.l: s.n.], 1982.
Citatione MLA (9a ed.)Beltran, Gil S. Exports of the Philippines: An Analysis of Demand and Supply Factors. s.n.], 1982.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.