Fogg, Shannon L., author
Oxford University Press, 2017
eBooks
Lionel D. Smith, editor
Ashgate, 2001
Buku Teks
Brogan, D.W. (Denis William), author
Time, 1960
Buku Teks
edited by Delia Jarrett-Macauley
Routledge, 1996
Buku Teks
editor, Cecil Roth
Massadah Publishing, 1959
Buku Referensi