Soundararajan, Radhika, author
Tata McGraw-Hill, 2012
Buku Teks
Corey, Gerald, author
Brooks/Cole Cengage Learning, 2013
Buku Teks
Nugent, Frank A.
Merrill , 1990
Buku Teks
Hackney, Harold
Allyn and Bacon, 1991
Buku Teks
Cavanagh, Michael E.
Brooks/Cole Pub. Co , 1982.
Buku Teks