Steingass, F., author
Kegan Paul, Trench, Trubner & Co., 1947
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Scharfstein, Zevi, author
America : Shilo Publishing House, 1073
Buku Referensi
Bliss, Alan J., author
Routledge & Kegan Paul, 1966
Buku Referensi
Ram Narain Lal Publisher, 1947
Buku Referensi
Roget, Peter Mark, 1779-1869, author
Longmans, Green and Co., 1953
Buku Referensi