Referensi
[vale.com] Laman resmi PT Vale Indonesia
https://vale.com/indonesia/career
[Instagram] Akun Instagram resmi “ptvaleindonesia”
https://www.facebook.com/61576920801200/posts/122115033308897360/?rdid=lvjr1k5DABGeEPgr# (unggahan akun Facebook “LOKER PT VALE INDONESIA”)
https://archive.ph/n1i4E (arsip unggahan akun Facebook “LOKER PT VALE INDONESIA”)
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