- Buku AudioLearn PolishPolyglot Planet
- Buku AudioArabic Parallel AudioLingo Jump
- Buku AudioGerman Parallel AudioLingo Jump
- Buku AudioRussian Parallel AudioLingo Jump
- Buku AudioHindi Parallel AudioLingo Jump
- Buku AudioFrench Parallel AudioLingo Jump
- Buku AudioSpanish Parallel AudioLingo Jump
- Buku AudioPortuguese Parallel AudioLingo Jump
- Buku AudioBulgarian Parallel AudioLingo Jump
- Buku AudioJapanese Parallel AudioLingo Jump
- Buku AudioCzech Parallel AudioLingo Jump
- Buku AudioPolish Parallel AudioLingo Jump
- Buku AudioItalian Parallel AudioLingo Jump
- Buku AudioLearn Portuguese - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn Italian - Audio-Course No. 2Polyglot Planet
- Buku AudioLearn French - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn GreekPolyglot Planet
- Buku AudioLearn Swedish - Audio-Course No. 2Polyglot Planet
- Buku AudioLearn Norwegian - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn Portuguese - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn PortuguesePolyglot Planet
- Buku AudioLearn Swedish - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn PolishPolyglot Planet
- Buku AudioLearn Italian - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn Swedish - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn SpanishPolyglot Planet
- Buku AudioLearn Greek - Audio-Course No. 2Polyglot Planet
- Buku AudioLearn TurkishPolyglot Planet
- Buku AudioLearn RussianPolyglot Planet
- Buku AudioLearn PolishPolyglot Planet
- Buku AudioLearn SpanishPolyglot Planet
- Buku AudioLearn TurkishPolyglot Planet
- Buku AudioLearn TurkishPolyglot Planet
- Buku AudioLearn Danish - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn RussianPolyglot Planet
- Buku AudioLearn German - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn Danish - Audio-Course No. 2Polyglot Planet
- Buku AudioLearn FrenchPolyglot Planet
- Buku AudioLearn German - Audio-Course No. 2Polyglot Planet
- Buku AudioLearn Danish - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn Italian - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn Greek - Audio-Course No. 1Polyglot Planet
- Buku AudioLearn GermanPolyglot Planet
- Buku AudioLearn DutchPolyglot Planet
- Buku AudioLearn DutchPolyglot Planet
- Buku AudioLearn RussianPolyglot Planet
- Buku AudioLearn Dutch - Audio-Course No. 3Polyglot Planet
- Buku AudioLearn French - Audio-Course No. 2Polyglot Planet
- Buku AudioAprender Inglés - Fácil de Leer - Fácil de Escuchar - Texto Paralelo Curso en Audio No. 3 [Learn English - Easy Reader - Easy Audio - Parallel Text Audio Course No. 3]Polyglot Planet