Shaffer, D. E. (1973). Library Job Descriptions: Examples Covering Major Work Areas.
Citazione stile Chigago Style (17a edizione)Shaffer, Dale E. Library Job Descriptions: Examples Covering Major Work Areas. 1973.
Citatione MLA (9a ed.)Shaffer, Dale E. Library Job Descriptions: Examples Covering Major Work Areas. 1973.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.