Fontaine, Karen Lee
Pearson Education, 2003
Multimedia
[edited by] Katherine M. Fortinash, Patricia A. Holoday Worret
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Buku Teks SO
[edited by] Elizabeth M. Varcarolis
Saunders, 2010
Buku Teks SO
[edited by] Elizabeth M. Varcarolis
Saunders, 1990
Buku Teks SO
Rinomhota, A. Shupikai
Churchill Living Stone, 2000
Buku Teks SO