Henczel, Susan, author
Saur Verlag, 2001
Buku Teks
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