รัตนสินสุจิตรา. “The University Library Resource Sharing to the School Library: Ongkharak Library and Secondary School Library, Nakhon Nayok Province”. TLA Bulletin (Thai Library Association) 62, no. 1 (June 30, 2018): 30-42. Accessed August 14, 2020. https://so06.tci-thaijo.org/index.php/tla_bulletin/article/view/132625.