Marshall, Brenda K., author
Routledge, 1992
Buku Teks
Moran, Patrick R., author
Heinle, Cengage Learning, 2001
Buku Teks
Weimer, Maryellen, author
Jossey-Bass , 2002
Buku Teks
Johnson, Earl S., author
Macmillan, 1956
Buku Teks
Kawauchi, Akio, editor
Springer, 2012
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