Kellert, Stephen R., general editor; Black Matthew, associate editors; Haley Richard, associate editors
Simon & Schuster, 1997
Buku Referensi
Lagowski, Joseph J.
MacMillan Reference USA, 1997
Buku Referensi
Gary G. Bitter, editor in chief
Macmillan, 1992
Buku Referensi
Gary G. Bitter, editor in chief
Macmillan, 1992
Buku Referensi
General editor, Stephen R. Kellert; Associate editors, Matthew Black, Richard Haley
London : Simon & Schuster, 1997,
Buku Referensi