Hirsh, S. (2018). Information services today: An introduction (Second edition.). Rowman & Littlefield.
Citazione stile Chigago Style (17a edizione)Hirsh, Sandra. Information Services Today: An Introduction. Second edition. Lanham: Rowman & Littlefield, 2018.
Citatione MLA (9a ed.)Hirsh, Sandra. Information Services Today: An Introduction. Second edition. Rowman & Littlefield, 2018.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.