Bly, Robert. The sibling society / Robert Bly. - Reading, Mass : Addison-Wesley Pub., c1996. - xiii, 319 p. ; 24 cm. ISBN: 0201406462 LCCN: 95042630 LC Class. No.: HM101 .B6165 1996 / .B6165 1996 Dewey Class. No.: 306