Cita APA (7a ed.)

Roberts, D. D. (1973). The existential graphs of Charles S. Peirce. Mouton.

Cita Chicago Style (17a ed.)

Roberts, Don D. The Existential Graphs of Charles S. Peirce. The Hague: Mouton, 1973.

Cita MLA (9a ed.)

Roberts, Don D. The Existential Graphs of Charles S. Peirce. Mouton, 1973.