Cita APA (7a ed.)

Salmon, N. U. (1991). Frege's puzzle. Ridgeview.

Cita Chicago Style (17a ed.)

Salmon, Nathan U. Frege's Puzzle. Atascadero, California: Ridgeview, 1991.

Cita MLA (9a ed.)

Salmon, Nathan U. Frege's Puzzle. Ridgeview, 1991.