McLeod, John, author
McGraw-hill Open University press, 2012
Buku Teks
Seach, Diana, author
Routledge , 2007
Buku Teks
Roberts, Ann, author
Routledge, 2007
Buku Teks
edited by Gwemmeth Roberts, Kelsey Hegarty, Gene Feder
Elsevier, Cruchill Livingstone, 2006
Buku Teks
edited by Doreen Granpeesheh, Jonathan Tarbox, Adel C. Naddowski, Julie Kornack
Academic Press, 2014
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