McCormick, Charles T. (Charles Tilford), 1889-1963
West Publishing, 1935
Buku Teks SO
editoed by Karl-Eduard von der Heydt, Stanley Keller
Graham & Trotman / Martinus Nijhoff, 1995
Buku Referensi
edited by John Angel, Ian Walden
Blackstone Press, 1997
Buku Referensi
Warr, George
Sweet & Maxwell, 1994
Buku Teks
MacLachlan, James Angell
West Publishing, 1956
Buku Teks