Não informado. (1973). BLL announcement bulletin. British Library, Lending Division.
Style de citation Chicago (17e éd.)Não informado. BLL Announcement Bulletin. Boston, Inglaterra: British Library, Lending Division, 1973.
Style de citation MLA (8e éd.)Não informado. BLL Announcement Bulletin. British Library, Lending Division, 1973.
Attention : ces citations peuvent ne pas être correctes à 100%.