Hypertext and Hypermedia
Jakob Nielsen, 1990

This book is out of print and has been superseded by the second edition which was published under the title Multimedia and Hypertext: The Internet and Beyond.
Published by Academic Press, Boston, MA. ISBN 0-12-518410-7 (hardcover), 0-12-518411-5 (1993 paperback edition), 4-8337-8583-8 (Japanese translation).