Frame, Janet.
G. Braziller, 1972
Buku Teks
Mayo, Elton, author
Harvard University Press, 1948
Buku Teks
Llewellyn, Karl N.
Little, Brown and Company, 1960
Buku Teks
Japan Center for International Exchange, 1999
Buku Teks
edited by Arch G. Woodside
Emerald, 2016
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