- Polską a cesarstwem..., p. 26–27.
Thietmar of Merseburg,
Thietmari merseburgiensis episcopi chronicon, VIII, 5(4). Sergent,
Bernard (1991). "Ethnozoonymes...
- Műhely. pp. 48–49. ISBN 963-04-2913-6.
Thietmar of Merseburg,
Thietmari merseburgiensis episcopi chronicon, 1018 Jan M Piskorski,
Pommern im
Wandel der Zeiten...
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Thietmar of Merseburg,
Thietmari merseburgiensis episcopi chronicon, 1018 Bryce,
James (1871). "The
Emperors Henry II...
-
mentioned as a town
Liubusua and
Libusua urbs in the
annals of
Thietmari merseburgiensis episcopi chronicon written in the
years 1012 - 1018 (under the rule...