edited by Karen S. Cosby, John L. Kendall
Wolters Kluwer, 2014
Buku Teks
Nicholls, Audrey, author
George Allen and Unwin, 1972
Buku Teks
French, Sally, author
Butterworth-Heinemann, 2001
Buku Referensi
by Peter Coburn ... [et al.]
Addison-Wesley, 1985
Buku Teks
Strong, William S., author
MIT Press, 1981
Buku Teks