APA (7 ম সংস্করণ) উদ্ধৃতি

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.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

VVB Spielwaren <Sonneberg> এবং Außenhandelsunternehmen DEMUSA GmbH <Berlin>. Leipzig Spring Fair 1967: Technical Fair and Consumer Goods Fair from 5th Till 14th March ; Fair Catalogue. Sonneberg: Volksdruckerei, 1967.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

VVB Spielwaren <Sonneberg> এবং Außenhandelsunternehmen DEMUSA GmbH <Berlin>. Leipzig Spring Fair 1967: Technical Fair and Consumer Goods Fair from 5th Till 14th March ; Fair Catalogue. Volksdruckerei, 1967.