Thompson, W. O. (1981). Concentric circles of concern. Broadman.
Chicagoスタイル(17版)引用形式Thompson, W. Oscar. Concentric Circles of Concern. Nashville: Broadman, 1981.
MLA(9版)引用形式Thompson, W. Oscar. Concentric Circles of Concern. Broadman, 1981.
警告: この引用は必ずしも正確ではありません.