Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Knapp, Donna, author
Course Technology, Cengage Learning, 2011
Buku Teks
Bolton, Arthur, 1921-, author
McGraw-Hill, 1994
Buku Referensi
Houghton Mifflin , 1993
Buku Referensi
Joseph L. Cavinato and Ralph G. Kauffman, editors in chief
McGraw-Hill, 1999
Buku Referensi