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PT Gramedia Pustaka Utama, 2017
Buku Teks
Erickson, Carlton W.H.
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Buku Teks
Hayes, Carlton J. H.
Macmillan, 1955
Buku Teks
Hayes, Carlton J. H.
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Buku Teks
Carlton, Katherine Tasheff
Gloucester, Ma Rockport Publisher 2001,
Buku Referensi