Artikel Jurnal
edited by Linda H. Aiken, Susan R. Gortner
J.B. Lippincott , 1982
Buku Teks
Aiken, Linda H., author
J.B. Lippincott , 1982
Buku Teks
edited by Martin H. Wolfson, Gerald A. Epstein
Oxford University Press, 2013
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Winberg, Alan R.
Westview Press, 1987
Buku Teks