Sorenson, Ritch, author
Prentice-Hall, 2001
Buku Referensi
edited by Zhu Hua
Wiley Blackwell, 2016
Buku Teks
Gurewich, Nathan, author
McGraw-Hill, 1992
Buku Teks
Yerbury, Hilary, author
University of Technology, 1992
Buku Referensi
Fitzgerald, Suzanne Sparks
McGraw-Hill, 2011
Buku Teks