एपीए उद्धरण

Suárez Rivero, D. (2013). The enigma of Gottlob Frege. Four approaches of the theorists of the direct reference.

शिकागो स्टाइल उद्धरण

Suárez Rivero, David. The Enigma of Gottlob Frege. Four Approaches of the Theorists of the Direct Reference. 2013.

एमएलए उद्धरण

Suárez Rivero, David. The Enigma of Gottlob Frege. Four Approaches of the Theorists of the Direct Reference. 2013.