Não informado. (1973). BLL announcement bulletin. British Library, Lending Division.
Chicagoスタイル(17版)引用形式Não informado. BLL Announcement Bulletin. Boston, Inglaterra: British Library, Lending Division, 1973.
MLA(8版)引用形式Não informado. BLL Announcement Bulletin. British Library, Lending Division, 1973.
警告: この引用は必ずしも正確ではありません.