Belkin, N. J., Narasimhalu, D., & Willett, P. (1997). Research and Development in Information Retrieval (1997): Proceedings of the 20th Annual International ACM SIGIR Conference Philadelphia, Pennsylvania, USA, July 27-July 31, 1997. Association for Computing Machinery.
Παραπομπή σε μορφή Chicago (17η εκδ.)Belkin, Nicholas J., Desai Narasimhalu, και Peter Willett. Research and Development in Information Retrieval (1997): Proceedings of the 20th Annual International ACM SIGIR Conference Philadelphia, Pennsylvania, USA, July 27-July 31, 1997. New York: Association for Computing Machinery, 1997.
Παραπομπή σε μορφή MLA (8th εκδ.)Belkin, Nicholas J., et al. Research and Development in Information Retrieval (1997): Proceedings of the 20th Annual International ACM SIGIR Conference Philadelphia, Pennsylvania, USA, July 27-July 31, 1997. Association for Computing Machinery, 1997.
