This translation and adaptation originally published: London : Thames and Hudson, 1964. - Adapted from 'Knaurs Opernfuhrer'. Munich : Droemersche Verlagsanstalt, 1952.
Includes index.
Opera guide by Gerhart von Westerman. ISBN 0722190042. Published by Sphere in 1973. Publication and catalogue information, links to buy online and reader comments.