Cita APA (7th ed.)

Piqon, M. T. (1973). Fundamental logic. s.n.

Cita Chicago (17th ed.)

Piqon, Manuel T. Fundamental Logic. s.l: s.n, 1973.

Cita MLA (9th ed.)

Piqon, Manuel T. Fundamental Logic. s.n, 1973.