SINGER, K. (1973). Membina Hasrat Belajar Di Sekolah/ Kurt Singer ;penerjemah, Bergman Sitorus. Bandung: Remaja RosdaKarya.
Lua i Stíl Chicago (17ú heag.)SINGER, Kurt. Membina Hasrat Belajar Di Sekolah/ Kurt Singer ;penerjemah, Bergman Sitorus. Bandung: Remaja RosdaKarya, 1973.
Lua MLA (8ú heag.)SINGER, Kurt. Membina Hasrat Belajar Di Sekolah/ Kurt Singer ;penerjemah, Bergman Sitorus. Bandung: Remaja RosdaKarya, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.