Helms-Mills, Jean, author
Routledge, 2009
Buku Teks
John, E.A., author
Pergamon, 1973
Buku Teks
edited by Donald Peter Cushman and Sarah Sanderson King
University of New York Press, 1995
Buku Teks
WinHope Press, 1995
Buku Teks
Bonanomi, Marcella M., author
Springer Cham, 2019
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