Macmillan, 2002
Buku Referensi
Martin, E. A. (Elizabeth A.)
MacMillan Press, 1985
Buku Referensi
general editor, David W. Pearce
Macmillan Reference Books, 1989
Buku Referensi
general editor, David W. Pearce
Macmillan Press, 1992
Buku Referensi
Joel G. Siegel, author
N.Y Barron, 1995
Buku Referensi