National Gallery (Great Britain). (1977). National Gallery technical bulletin. Publications Dept., National Gallery.
Cita Chicago Style (17a ed.)National Gallery (Great Britain). National Gallery Technical Bulletin. London: Publications Dept., National Gallery, 1977.
Cita MLA (8a ed.)National Gallery (Great Britain). National Gallery Technical Bulletin. Publications Dept., National Gallery, 1977.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.