American Library Association. Board on Personnel Administration. (1948). Descriptive list of professional and nonprofessional duties in libraries: Preliminary draft.
Citazione stile Chigago Style (17a edizione)American Library Association. Board on Personnel Administration. Descriptive List of Professional and Nonprofessional Duties in Libraries: Preliminary Draft. Chicago, 1948.
Citatione MLA (9a ed.)American Library Association. Board on Personnel Administration. Descriptive List of Professional and Nonprofessional Duties in Libraries: Preliminary Draft. 1948.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.