Supplement to the Historical and descriptive catalogue of the pictures, busts, etc. in the National Portrait Gallery.
APA Citation
National Portrait Gallery (Great Britain). (1906). Supplement to the Historical and descriptive catalogue of the pictures, busts, etc. in the National Portrait Gallery. 12th ed. London: Printed for H.M. Stationery Off. by Darling and Son, ltd..
MLA Citation
National Portrait Gallery (Great Britain). Supplement to the Historical And Descriptive Catalogue of the Pictures, Busts, Etc. In the National Portrait Gallery. 12th ed. London: Printed for H.M. Stationery Off. by Darling and Son, ltd., 1906.
Warning: These citations may not always be complete (especially for serials).