Nairne, S., & Howgate, S. (2006). The Portrait Now: Sandy Nairne ; Sarah Howgate. National Portrait Gallery Publ..
Chicago-Zitierstil (17. Ausg.)Nairne, Sandy, und Sarah Howgate. The Portrait Now: Sandy Nairne ; Sarah Howgate. London: National Portrait Gallery Publ., 2006.
MLA-Zitierstil (8. Ausg.)Nairne, Sandy, und Sarah Howgate. The Portrait Now: Sandy Nairne ; Sarah Howgate. National Portrait Gallery Publ., 2006.
警告：這些引文格式不一定是100％准確.