Smart, Huw
Blackstone's police Q and A : general police duties 2006
Oxford University Press, 2006
 Buku Referensi
Smart, Huw
Blackstone's police Q and A : road policing 2006
Oxford University Press, 2006
 Buku Referensi
Smart, Huw
Blackstone's police Q and A : evidence and procedure 2006
Oxford University Press, 2006
 Buku Referensi
Battus
Q
querido's uigeverij, 1990
 Buku Teks
Blackstone's international law documents
edited by Malcolm D. Evans
Balckstone, 1991
 Buku Referensi