Tobiasz 📚 komencis legi Esperanto - Lingua Franca and Language Community de Sabine Fiedler 23-a de junio 2023 Publika Esperanto - Lingua Franca and Language Community (2022, Benjamins Publishing Company, John)Esperanto - Lingua Franca and Language Community de Sabine Fiedler, Cyril Robert Brosch
