Campbell, J. D. (2000). Clinging to Traditional Reference Services: An Open Invitation to Libref.com.
Citazione stile Chigago Style (17a edizione)Campbell, Jerry D. Clinging to Traditional Reference Services: An Open Invitation to Libref.com. 2000.
Citatione MLA (9a ed.)Campbell, Jerry D. Clinging to Traditional Reference Services: An Open Invitation to Libref.com. 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.