Checklist of the permanent collection /
National Portrait Gallery, Smithsonian Institution.
APA Citation
National Portrait Gallery (Smithsonian Institution). Checklist of the permanent collection. Washington: Smithsonian Institution Press, 1973-.
MLA Citation
National Portrait Gallery (Smithsonian Institution). Checklist of the Permanent Collection. Washington: Smithsonian Institution Press, 1973-,
Warning: These citations may not always be complete (especially for serials).