Lavalin International Inc. (1988). Land resources and land use planning: Final report : regional development planning for Irian Jaya. Lavalin International.
Chicago Style aipamenaLavalin International Inc. Land Resources and Land Use Planning: Final Report : Regional Development Planning for Irian Jaya. [Jakarta]: Lavalin International, 1988.
MLA aipamenaLavalin International Inc. Land Resources and Land Use Planning: Final Report : Regional Development Planning for Irian Jaya. Lavalin International, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.