Heaney, M. (2009). Library Statistics for the Twenty-First Century World. Proceedings of the conference held in Montreal on 18-19 August 2008 reporting on the Global Library Statistics Project. De Gruyter. https://doi.org/10.1515/9783598441677
Lua i Stíl Chicago (17ú heag.)Heaney, Michael. Library Statistics for the Twenty-First Century World. Proceedings of the Conference Held in Montreal on 18-19 August 2008 Reporting on the Global Library Statistics Project. De Gruyter, 2009. https://doi.org/10.1515/9783598441677.
Lua MLA (9ú heag.)Heaney, Michael. Library Statistics for the Twenty-First Century World. Proceedings of the Conference Held in Montreal on 18-19 August 2008 Reporting on the Global Library Statistics Project. De Gruyter, 2009. https://doi.org/10.1515/9783598441677.