(1972). Bibliographical services throught the World 1965-69. Unesco.
Chicago Style (17th ed.) CitationBibliographical Services Throught the World 1965-69. Paris: Unesco, 1972.
MLA (9th ed.) CitationBibliographical Services Throught the World 1965-69. Unesco, 1972.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.