Lumbantobing, A. Pulungpulungan [microform].
Lua i Stíl Chicago (17ú heag.)Lumbantobing, Arsenius. Pulungpulungan [microform].
Lua MLA (9ú heag.)Lumbantobing, Arsenius. Pulungpulungan [microform].
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.