Gill, R. R. R. (1990). Deducibility and decidability. Routledge.
Chicagoスタイル(17版)引用形式Gill, R. R. Rockingham. Deducibility and Decidability. London ; New York: Routledge, 1990.
MLA(9版)引用形式Gill, R. R. Rockingham. Deducibility and Decidability. Routledge, 1990.
警告: この引用は必ずしも正確ではありません.