Heldreich, G. J. (1990). The History of the von Heldreich family and their English descendants: By Graeme John Heldreich. Aries Print.
Citace podle Chicago (17th ed.)Heldreich, Graeme John. The History of the Von Heldreich Family and Their English Descendants: By Graeme John Heldreich. Coventry: Aries Print, 1990.
Citace podle MLA (8th ed.)Heldreich, Graeme John. The History of the Von Heldreich Family and Their English Descendants: By Graeme John Heldreich. Aries Print, 1990.
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