Dillard, J. M. Mindshadow / J.M. Dillard. - New York : Pocket Books, 1986. - 252 p. ; 18 cm. - Star Trek ; no. 27 . New York : New York Public Library, 1986 ISBN: 0671607561 9780671607562 LC Class. No.: PS 3553 / D578m 1986