APA
Friedman M., . (2007). The Cambridge Companion To Carnap. : Cambridge.
Chicago
Friedman Michael, . 2007. The Cambridge Companion To Carnap. : Cambridge.
Harvard
Friedman M., . (2007). The Cambridge Companion To Carnap. : Cambridge.
MLA
Friedman Michael, . The Cambridge Companion To Carnap. : Cambridge. 2007.