Kokusai Kyōryoku Jigyōdan. (1988). The Study on the integrated regional development plan for the northern part of Sumatra: Progress report II. JICA.
Lua i Stíl Chicago (17ú heag.)Kokusai Kyōryoku Jigyōdan. The Study on the Integrated Regional Development Plan for the Northern Part of Sumatra: Progress Report II. [Jakarta]: JICA, 1988.
Lua MLA (8ú heag.)Kokusai Kyōryoku Jigyōdan. The Study on the Integrated Regional Development Plan for the Northern Part of Sumatra: Progress Report II. JICA, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.