Pitt, H. M. (1911). Reciprocity and the Philippine Islands. Manila Merchants' Association.
Citazione stile Chigago Style (17a edizione)Pitt, Harold M. Reciprocity and the Philippine Islands. Manila: Manila Merchants' Association, 1911.
Citatione MLA (9a ed.)Pitt, Harold M. Reciprocity and the Philippine Islands. Manila Merchants' Association, 1911.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.