Winokur, George, author
W.B. Saunders, 1986
Buku Teks
Rosenfeld, George W., author
Routledge, Taylor & Francis Group, 2009
Buku Teks
Sarah Stringer, Laurence Church, Susan Davision, Maurice Lipsedge, editor
Oxford Univesity Press, 2009
Buku Teks
Anderson, Edward William
Baillière Tindall & Cassell, 1979
Buku Teks
Shands, Harley C.
Mouton, 1970
Buku Teks