compiled and edited by Harold Shepherd and Byron D. Sher
Foundation Press, 1960
Buku Teks
Schlesinger, Rudolf B.
The Foundation Press, 1950
Buku Klasik
Schefer, Krista Nadakavukaren, author
Edward Elgar Publishing, 2016
Buku Teks
Kluwer, 1990,
Buku Referensi
Kluwer, 1990,
Buku Referensi