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Lua i Stíl Chicago (17ú heag.)Lockyer, Keith, Alan Muhlemann, agus John Oakland. Manajemen Produksi Dan Operasi: Production and Operations Management Ed. 5. Jakarta: Elex Media Komputindo, 1990.
Lua MLA (9ú heag.)Lockyer, Keith, et al. Manajemen Produksi Dan Operasi: Production and Operations Management Ed. 5. Elex Media Komputindo, 1990.
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