For books with no identifiable author or editor, substitute the title for the author. Begin the in-text reference with the first few words of the title, followed by "...". Use only as many words as are necessary to distinguish the book from the other titles you are listing.
Title of Book. Edition. Year. Place of publication (State or Prov): Publisher name. Number of pages p.
(The encyclopedic dictionary... 1986)
The encyclopedic dictionary of psychology. 3rd ed. 1986. Guilford (CT): Dushkin Publishing Group.