Motz, R. (1942). Thirty questions about Belgium. London: Lincolns-Prager.
Lua i Stíl Chicago (17ú heag.)Motz, Roger. Thirty Questions About Belgium. London: Lincolns-Prager, 1942.
Lua MLA (8ú heag.)Motz, Roger. Thirty Questions About Belgium. London: Lincolns-Prager, 1942.
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