APA (7th ed.) Citation

Thiel, C. (1968). Sense and reference in Frege's logic. D. Reidel.

Chicago Style (17th ed.) Citation

Thiel, Christian. Sense and Reference in Frege's Logic. Dortrecht: D. Reidel, 1968.

MLA (8th ed.) Citation

Thiel, Christian. Sense and Reference in Frege's Logic. D. Reidel, 1968.

Warning: These citations may not always be 100% accurate.