Costello, Matthew J. (Matthew John), 1948- (Nombre personal)

Beneath still waters, 1989: t.p., etc. (Matthew J. Costello)

Biogr. resource center, Sept. 23, 2001 (Matthew J(ohn) Costello, Matt Costello; American horror, Gothic, and science fiction writer; b. 1948; also works as a computer-game scenarist; r. in New York State; author of Sleep tight (1987), Beneath still waters (1989), Garden (1993), The seventh guest (1995), Homecoming (1992), seaQuest DSV: the fire below (1994), How to write science fiction (1992) among others)

Publishers weekly, Feb. 3, 1997: p. 42 (Costello, a novelist who has scripted CD-ROM interactive dramas)

The greatest puzzles of all time, c1987: CIP t.p. (Matthew J. Costello)

FantasticFiction website, March 10, 2003 (Matthew J. Costello, 1948- ; site includes list of his publications)

Christopher, Shane. In dreams, 2006: t.p. (Shane Christopher) ; copyright statement (Matthew J. Costello)

FantasticFiction website, 4 Jun. 2008 (Shane Christopher, a pseudonym used by Matthew J. Costello)