"Some materials in this work previously appeared in Macroeconomics : principles and policy, 6th ed., 1994 which was derived from Economics : principles and policy, 6th ed., 1994" -- T.p. verso.
Microeconomics : principles and policy by William J. Baumol. ISBN 0030112648. Published by Dryden Press in 1997. Publication and catalogue information, links to buy online and reader comments.