APA استشهاد

Umberto Eco. (1984). Semiotics and the philosophy of language. Macmillan.

استشهاد بنمط شيكاغو

Umberto Eco. Semiotics and the Philosophy of Language. London: Macmillan, 1984.

MLA استشهاد

Umberto Eco. Semiotics and the Philosophy of Language. Macmillan, 1984.