Posner, S., & Webb, S. (1916). Poland as an independent economic unit. George Allen & Unwin Ltd. : for the Polish Information Committee.
Citazione stile Chigago Style (17a edizione)Posner, Stanisław, e Sidney Webb. Poland as an Independent Economic Unit. London: George Allen & Unwin Ltd. : for the Polish Information Committee, 1916.
Citatione MLA (9a ed.)Posner, Stanisław, e Sidney Webb. Poland as an Independent Economic Unit. George Allen & Unwin Ltd. : for the Polish Information Committee, 1916.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.