Παραπομπή APA

Grolier, E. d. (1962). A study general categories applicable to classification and coding in documentation. Paris: Unesco.

Παραπομπή Chicago Style

Grolier, Eric de. A Study General Categories Applicable to Classification and Coding in Documentation. Paris: Unesco, 1962.

Παραπομπή MLA

Grolier, Eric de. A Study General Categories Applicable to Classification and Coding in Documentation. Paris: Unesco, 1962.

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