Cita APA (7th ed.)

Pei, M. A. (1949). The story of language. The New York American Library.

Cita Chicago (17th ed.)

Pei, Mario Andrew. The Story of Language. Nueva York: The New York American Library, 1949.

Cita MLA (9th ed.)

Pei, Mario Andrew. The Story of Language. The New York American Library, 1949.