Ballard, S. (2009). Developing the Vision: An L4L Job Description for the 21st Century.
Citazione stile Chigago Style (17a edizione)Ballard, Susan. Developing the Vision: An L4L Job Description for the 21st Century. 2009.
Citatione MLA (9a ed.)Ballard, Susan. Developing the Vision: An L4L Job Description for the 21st Century. 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.