MLA

George, William, active 1828-1830, publisher. W. George, from Clementi's, music seller & publisher, No. 85 Fleet Street, corner of St. Bride's Avenue, London. [between 1828 and 1830]. https://collections.library.yale.edu/catalog/33434201.

APA, 6th edition

George, William, active 1828-1830, publisher. ([between 1828 and 1830])[W. George, from Clementi's, music seller & publisher, No. 85 Fleet Street, corner of St. Bride's Avenue, London]. https://collections.library.yale.edu/catalog/33434201.