Catalogue of additions to the manuscripts, 1946-1950 :
additional manuscripts 46173-47458, Egerton manuscripts 3320-3675, additional charters and rolls 71757-74932, Egerton charters and rolls 2243-8849, detached seals and casts, facsimiles of manuscripts /
the British Library.

APA Citation

British Library. (1979). Catalogue of additions to the manuscripts, 1946-1950: additional manuscripts 46173-47458, Egerton manuscripts 3320-3675, additional charters and rolls 71757-74932, Egerton charters and rolls 2243-8849, detached seals and casts, facsimiles of manuscripts. London: The Library.

MLA Citation

British Library. Catalogue of Additions to the Manuscripts, 1946-1950: Additional Manuscripts 46173-47458, Egerton Manuscripts 3320-3675, Additional Charters And Rolls 71757-74932, Egerton Charters And Rolls 2243-8849, Detached Seals And Casts, Facsimiles of Manuscripts. London: The Library, 1979.

Warning: These citations may not always be complete (especially for serials).