APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.