(1982). bi-Materialien. Deutsches Bibliotheksinst.
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Dyfyniad Arddull Chicago
Bi-Materialien. Berlin: Deutsches Bibliotheksinst, 1982.
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Dyfyniad MLA
Bi-Materialien. Deutsches Bibliotheksinst, 1982.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.