British Standards Institution. (1965). Recommendations for symbols for languages, geographical areas and authorities. The Institution.
Citace podle Chicago (17th ed.)British Standards Institution. Recommendations for Symbols for Languages, Geographical Areas and Authorities. London: The Institution, 1965.
Citace podle MLA (8th ed.)British Standards Institution. Recommendations for Symbols for Languages, Geographical Areas and Authorities. The Institution, 1965.
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