Cita APA (7a ed.)

Pei, M. A. (1968). The story of language (Rev. ed.). George Allen & Unwin.

Cita Chicago Style (17a ed.)

Pei, Mario A. The Story of Language. Rev. ed. London: George Allen & Unwin, 1968.

Cita MLA (9a ed.)

Pei, Mario A. The Story of Language. Rev. ed. George Allen & Unwin, 1968.