APA-viite (7. p.)

Carl, W. (1994). Frege's Theory of Sense and Reference: Its origins and scope. Univ. Pr..

Chicago-viite (17. p.)

Carl, Wolfgang. Frege's Theory of Sense and Reference: Its Origins and Scope. Cambridge: Univ. Pr., 1994.

MLA-viite (9. p.)

Carl, Wolfgang. Frege's Theory of Sense and Reference: Its Origins and Scope. Univ. Pr., 1994.