Harper, M., Carballo V., G., & Sandí Sandí, M. (1997). Twenty years of the Foundation of the School of Library, Documentation and Information of the National University Intellectual Property in Costa Rica - The information technology environment.
Trích dẫn kiểu ChicagoHarper, Marlene, Guishelle Carballo V., và Magda Sandí Sandí. Twenty Years of the Foundation of the School of Library, Documentation and Information of the National University Intellectual Property in Costa Rica - The Information Technology Environment. 1997.
Trích dẫn MLAHarper, Marlene, Guishelle Carballo V., và Magda Sandí Sandí. Twenty Years of the Foundation of the School of Library, Documentation and Information of the National University Intellectual Property in Costa Rica - The Information Technology Environment. 1997.