MLA

Clement, William, -1839, bookseller. Wm. Clement, bookseller & stationer, No. 201 Strand, (opposite St. Clements Church). : News papers served in town, and regularly sent to all parts of England postage free. Copper plate engraving and printing in the neatest manner, books elegantly bound and carefully packed for exportation. [between 1801 and 1810]. https://collections.library.yale.edu/catalog/33117826.

APA, 6th edition

Clement, William, -1839, bookseller. ([between 1801 and 1810])[Wm. Clement, bookseller & stationer, No. 201 Strand, (opposite St. Clements Church). : News papers served in town, and regularly sent to all parts of England postage free. Copper plate engraving and printing in the neatest manner, books elegantly bound and carefully packed for exportation]. https://collections.library.yale.edu/catalog/33117826.