Petre, M. D. (1925). The two cities: Or, Statecraft and idealism. Longmans, Green.
Lua i Stíl Chicago (17ú heag.)Petre, Maude Dominica. The Two Cities: Or, Statecraft and Idealism. London: Longmans, Green, 1925.
Lua MLA (8ú heag.)Petre, Maude Dominica. The Two Cities: Or, Statecraft and Idealism. Longmans, Green, 1925.
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