VVB Spielwaren <Sonneberg> & Außenhandelsunternehmen DEMUSA GmbH <Berlin>. (1967). Leipzig Spring Fair 1967: Technical Fair and Consumer Goods Fair from 5th Till 14th March ; Fair Catalogue. Volksdruckerei.
Chicago Style (17. basım) AtıfVVB Spielwaren <Sonneberg> ve Außenhandelsunternehmen DEMUSA GmbH <Berlin>. Leipzig Spring Fair 1967: Technical Fair and Consumer Goods Fair from 5th Till 14th March ; Fair Catalogue. Sonneberg: Volksdruckerei, 1967.
MLA (8th ed.) AtıfVVB Spielwaren <Sonneberg> ve Außenhandelsunternehmen DEMUSA GmbH <Berlin>. Leipzig Spring Fair 1967: Technical Fair and Consumer Goods Fair from 5th Till 14th March ; Fair Catalogue. Volksdruckerei, 1967.
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