Gageby, D. (1999). The last Secretary General: Sean Lester and the League of Nations. Town House and Country House.
Citazione stile Chigago Style (17a edizione)Gageby, Douglas. The Last Secretary General: Sean Lester and the League of Nations. Dublin: Town House and Country House, 1999.
Citatione MLA (9a ed.)Gageby, Douglas. The Last Secretary General: Sean Lester and the League of Nations. Town House and Country House, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.