Gill, R. R. R. (1990). Deducibility and decidability. Routledge.
Cita Chicago Style (17a ed.)Gill, R. R. Rockingham. Deducibility and Decidability. London ; New York: Routledge, 1990.
Cita MLA (9a ed.)Gill, R. R. Rockingham. Deducibility and Decidability. Routledge, 1990.
Precaución: Estas citas no son 100% exactas.