Polzenhagen, F., & Xia, X. Language, culture, and prototypicality: Frank Polzenhagen. Xiaoyan Xia. The Routledge handbook of language and culture.(2015).

Polzenhagen, Frank, and Xiaoyan Xia. "Language, Culture, and Prototypicality: Frank Polzenhagen. Xiaoyan Xia." The Routledge Handbook of Language and Culture.(2015) .

Polzenhagen, Frank, and Xiaoyan Xia. "Language, Culture, and Prototypicality: Frank Polzenhagen. Xiaoyan Xia." The Routledge Handbook of Language and Culture.(2015), .