OJO, S. A. (2002). A comprehensive revision handbook of French grammar. Signal education.
Lua i Stíl Chicago (17ú heag.)OJO, S. Ade. A Comprehensive Revision Handbook of French Grammar. Signal education, 2002.
Lua MLA (9ú heag.)OJO, S. Ade. A Comprehensive Revision Handbook of French Grammar. Signal education, 2002.
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