Anderson, Benedict R. O`G. (Benedict Richard O`Gorman), 1936-2015, author
INSIST, 2002
Buku Teks
American Association of Community and Junior Colleges, 1988
Buku Teks
McGraw-Hill, 2000
Buku Teks
Brown, L. Neville (Lionel Neville), author
Sweet and Maxwell, 1994
Buku Teks
Sang-Bok, Han
Seoul University Press, 1977
Buku Teks