John Sikula, senior editor ; Thomas Buttery, editor, Edith Guyton, editor
Macmillan Library Reference USA, 1996
Buku Referensi
edited by Joyce Liddle
Emerald, 2016
eBooks
Adams, Anthony
Falmer Press, 1995
Buku Teks
Justin Dillon, Meg Maguire, editor
McGraw-Hill, 2011
Buku Teks
Schröpfer, Thomas
Springer Singapore, 2019
eBooks