The 1989 World Book Year Book,
World Book, 1989, 576 p. : ill., 0-7166-0489-2.
.
The 1989 World Book Year Book.
Chicago etc.: World Book, 1989, 576 p. : ill., 0-7166-0489-2.
(1989)
The 1989 World Book Year Book,
Chicago etc.: World Book, 576 p. : ill., 0-7166-0489-2
(1989).
The 1989 World Book Year Book. The Annual Supplement to The World Book Encyclopedia : A Review of the Events of 1988. Chicago etc.: World Book, 576 p. : ill..