Tali Balas Kaplan; Andrea Dolloff; Sue Giffard; Jennifer Still-Schiff. "Metis Innovations". Metis: Library Classification for Children. Ethical Culture Fieldston School. Archived from the original on 27 November 2020. Retrieved 19 July 2021.
Tali Balas Kaplan; Andrea Dolloff; Sue Giffard; Jennifer Still-Schiff. "Metis Innovations". Metis: Library Classification for Children. Ethical Culture Fieldston School. Archived from the original on 27 November 2020. Retrieved 19 July 2021.