Hanbury, Harold Grenville
A history of English law; Vol. I
Methuen, 1956
 Buku Teks
Otis, William Bradley
An outline-history of English literature; Vol. 1: to Dryden
Barnes & Noble, [c1937]
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Republik Indonesia : Propinsi Sumatra Tengah, vol. XI
Indonesia. Kementerian Penerangan
Kementrian Penerangan,
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Great books of the western world; Vol. XI
edited by Mortimer J. Adler
Encyclopedia Britanica, 1990
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Slapper, Gary
English law
Cavendish Publishing Limited, 2000
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