Johnstone, Ronald L., author
Prentice-Hall, 1975
Buku Teks
Hook, Sidney, author
Collier Books, 1959
Buku Teks
Harsja W. Bachtiar, 1934-, author
Djambatan, 1976
Buku Teks
Mitchell, Basil, author
Oxford University Press, 1970
Buku Teks
Norbeck, Edward
Harper & Brothers publishers, 1961
Buku Teks