MLA

Ducret, Siegfried, Christine Friedlander, and Michael Wolgensinger. The Colour Treasury of Eighteenth Century Porcelain. Oxford: Elsevier-Phaidon, 1976.

APA

Ducret, S., Friedlander, C., & Wolgensinger, M. (1976). The colour treasury of eighteenth century porcelain. Oxford: Elsevier-Phaidon.

Chicago

Ducret, Siegfried, and Michael Wolgensinger. The Colour Treasury of Eighteenth Century Porcelain. Translated by Christine Friedlander. Oxford: Elsevier-Phaidon, 1976.