Referensi Cara Membuat Fitur Ubah Bahasa dengan Yii Framework

1. Special Topics: Internationalization | The Definitive Guide to Yii 2.0 | Yii PHP Framework (yiiframework.com)

2. i18n with Yii 2 Advanced Template – { the code ninja }

3. internationalization - yii2 i18n not working with buttons - Stack Overflow

4. yii2-cookbook/book/i18n-selecting-application-language.md at master · samdark/yii2-cookbook (github.com)