Marie Segrave and Laura Vitis, editors
Routledge, Taylor & Francis Group, 2017
Buku Teks
edited by Jennifer Terry, Melodie Calvert
Routledge Press, 1997
Buku Teks
Alcorn, Paul A.
Prentice-Hall, 2000
Buku Teks
Norman, Colin
Norton, 1981
Buku Teks
Ilse Oosterlaken
Springer, 2012
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