Bigham, Julia ; Monem, Nadine Kathe ; Lopez, Emilia
Black Dog, 2007
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Wolf, Martin L.
Philosophical Library, 1951
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edited by Harold Osborne
Clarendon Press, 1970
Buku Referensi
Hall, James
John Murray, 1995
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Peter
Penguin, 1978
Buku Referensi