editor, Cecil Turner
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Buku Referensi
Hatt, John
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Buku Teks
Boniface, Brian G, author
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Buku Teks
Middleton, Victor T.C., author
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Buku Teks
Angga Wijaya Holman Fasa, author
Badan Perencanaan Pembangunan Nasional (BAPPENAS), 2023
Artikel Jurnal