Persatuan Perpustakaan Malaysia, Library Association of Singapore, & Wijasuriya, D. E. K. (1977). Keperluan mengetahui: Perkembangan perkhidmatan perpustakaan awam bagi masyarakat = The need to know : developing public library services for the community : proceedings of a joint conference of the Persatuan Perpustakaan Malaysia and the Library Association of Singapore, Petaling Jaya, 3-5 March 1977. Persatuan Perpustakaan Malaysia.
Παραπομπή σε μορφή Chicago (17η εκδ.)Persatuan Perpustakaan Malaysia, Library Association of Singapore, και D. E. K. Wijasuriya. Keperluan Mengetahui: Perkembangan Perkhidmatan Perpustakaan Awam Bagi Masyarakat = The Need to Know : Developing Public Library Services for the Community : Proceedings of a Joint Conference of the Persatuan Perpustakaan Malaysia and the Library Association of Singapore, Petaling Jaya, 3-5 March 1977. Kuala Lumpur: Persatuan Perpustakaan Malaysia, 1977.
Παραπομπή σε μορφή MLA (8th εκδ.)Persatuan Perpustakaan Malaysia, et al. Keperluan Mengetahui: Perkembangan Perkhidmatan Perpustakaan Awam Bagi Masyarakat = The Need to Know : Developing Public Library Services for the Community : Proceedings of a Joint Conference of the Persatuan Perpustakaan Malaysia and the Library Association of Singapore, Petaling Jaya, 3-5 March 1977. Persatuan Perpustakaan Malaysia, 1977.