Azer, Samy
Elsevier, 2008
Buku Teks
Carolyn Jackson, Claire Thurgate
McGraw-Hill, 2011
Buku Teks
Amador, Jose A.
Anker Publishing, 2006
Buku Teks
edited by Margaret Yelloly and Mary Henkel
Jessica Kingsley Publishers, 1995
Buku Teks
Glen O’Grady, Elaine H.J. Yew, Karen P.L. Goh, Henk G. Fchmidt, editor
[, Springer], 2012
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