Citação APA (7ª ed.)
Gripsholm (Museum : Sweden), National Portrait Gallery (Smithsonian Institution), & Johnsson, U. G. (1988). Masterpieces from Gripsholm Castle: The Swedish National Portrait Collection. National Swedish Art Museums.
Citação do estilo Chicago (17ª ed.)
Gripsholm (Museum : Sweden), National Portrait Gallery (Smithsonian Institution), e Ulf G. Johnsson. Masterpieces from Gripsholm Castle: The Swedish National Portrait Collection. Stockholm: National Swedish Art Museums, 1988.
Citação MLA (9ª ed.)
Gripsholm (Museum : Sweden), et al. Masterpieces from Gripsholm Castle: The Swedish National Portrait Collection. National Swedish Art Museums, 1988.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.