Hunter, Wilson William
A Brief history of the Indian people
Clarendon Press, 1903
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Sri Dwi Astuti
Persepsi karyawan outsourcing atas faktor-faktor yang membangkitkan stres kerja pada call center PT X Jakarta Pusat
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2008
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Lucas, Robert W.
How to be a great call center representative
American Management Association, 2001
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Giere, Nancy M.
Call center training: teams & quality
[American Society for Training & Development Press, American Society for Training & Development Press], 2000
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A brief look at recent developments in the preservation and conservation of special collections Jennifer E.Hain
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