Barnett, A. Doak (Arthur Doak), author
Harper & Brathers, 1960
Buku Teks
Mackerras, Colin, author
Longman Cheshire, 1994
Buku Teks
Kuo, P.C. (Ping-chia), author
V. Gollancz, 1956
Buku Teks
Starr, John Bryan, author
Harper & Row, 1973
Buku Teks
Whiting, Allen S.
McGraw-Hill , 1980
Buku Teks