McDonald, Roger, author
University of Queensland Press, 1979
Buku Teks
Preda, Marin, author
Foreign Languages Publishing House, 1957
Buku Teks
Eldefonso, Edward
John Wiley , 1983
Buku Teks
Rubin, Sol, author
Oceanea Publication, 1970
Buku Teks
Arnold, William R.
Houghton Mifflin, 1983
Buku Teks