Ruby, L. (1950). Logic: An introduction. Lippincott.
Chicagoスタイル(17版)引用形式Ruby, Lionel. Logic: An Introduction. Philadelphia: Lippincott, 1950.
MLA(9版)引用形式Ruby, Lionel. Logic: An Introduction. Lippincott, 1950.
警告: この引用は必ずしも正確ではありません.
Ruby, L. (1950). Logic: An introduction. Lippincott.
Chicagoスタイル(17版)引用形式Ruby, Lionel. Logic: An Introduction. Philadelphia: Lippincott, 1950.
MLA(9版)引用形式Ruby, Lionel. Logic: An Introduction. Lippincott, 1950.