Livingston, C. W., & Goodwin, L. R. W. (1951). An introduction to the design of underground openings for defense. s.n.
Chicagoスタイル(17版)引用形式Livingston, Clifton W., , Le Roy W. Goodwin. An Introduction to the Design of Underground Openings for Defense. Golden: s.n, 1951.
MLA(9版)引用形式Livingston, Clifton W., , Le Roy W. Goodwin. An Introduction to the Design of Underground Openings for Defense. s.n, 1951.
警告: この引用は必ずしも正確ではありません.