Wasata Jati, P.T. (1980). Feasibility study/project proposal pengembangan Perkebunan "Lalow-Lolak". Wasata Jati.
Lua i Stíl Chicago (17ú heag.)Wasata Jati, P.T. Feasibility Study/project Proposal Pengembangan Perkebunan "Lalow-Lolak". Manado: Wasata Jati, 1980.
Lua MLA (8ú heag.)Wasata Jati, P.T. Feasibility Study/project Proposal Pengembangan Perkebunan "Lalow-Lolak". Wasata Jati, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.