Lua APA (7ú heag.)

Luthan, J. (1972). Value added of the mining and quarrying industries in South Sumatra, 1970. Lembaga Ekonomi dan Kemasjarakatan Nasional.

Lua i Stíl Chicago (17ú heag.)

Luthan, Julian. Value Added of the Mining and Quarrying Industries in South Sumatra, 1970. [Djakarta: Lembaga Ekonomi dan Kemasjarakatan Nasional, 1972.

Lua MLA (8ú heag.)

Luthan, Julian. Value Added of the Mining and Quarrying Industries in South Sumatra, 1970. Lembaga Ekonomi dan Kemasjarakatan Nasional, 1972.

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