Shaw, K., & Spink, A. (2009). University Library Virtual Reference Services: Best Practices and Continuous Improvement.
Citazione stile Chigago Style (17a edizione)Shaw, Kate, e Amanda Spink. University Library Virtual Reference Services: Best Practices and Continuous Improvement. 2009.
Citatione MLA (9a ed.)Shaw, Kate, e Amanda Spink. University Library Virtual Reference Services: Best Practices and Continuous Improvement. 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.