Heintze, I. (1963). The Organization of the small public library. Unesco.
Chicago Style (17th ed.) ZitazioaHeintze, Ingeborg. The Organization of the Small Public Library. Paris: Unesco, 1963.
MLA (9th ed.) ZitazioaHeintze, Ingeborg. The Organization of the Small Public Library. Unesco, 1963.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.