James, Francis Edmund Skone
Sweet & Maxwell, 1958
Buku Teks
edited by Kevin Garnett, Gillian Davies, Gwilym Harbottle
Sweet & Maxwell, 2005
Buku Referensi
Cornish, Graham P., author
The Library Association, 1991
Buku Teks
Marett, Paul
Gower , 1991
Buku Teks
Cornish, G. P., author
Cambridge University Press, 2015
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