Aitchison, J. (1977). Unesco Thesaurus: A structured list of descriptors for indexing and retrieving literature in the fields of education, science, social science, culture and communication. Unesco.
Chicago-Zitierstil (17. Ausg.)Aitchison, Jean. Unesco Thesaurus: A Structured List of Descriptors for Indexing and Retrieving Literature in the Fields of Education, Science, Social Science, Culture and Communication. Paris: Unesco, 1977.
MLA-Zitierstil (9. Ausg.)Aitchison, Jean. Unesco Thesaurus: A Structured List of Descriptors for Indexing and Retrieving Literature in the Fields of Education, Science, Social Science, Culture and Communication. Unesco, 1977.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.