MLA

Natanson, J. Gothic Ivories of the 13th and 14th Centuries. London: Alec Tiranti, 1951.

APA

Natanson, J. (1951). Gothic ivories of the 13th and 14th centuries. London: Alec Tiranti.

Chicago

Natanson, J. Gothic Ivories of the 13th and 14th Centuries. London: Alec Tiranti, 1951.