Colombo Plan Bureau, Goonetilleke, L. P., & Lee, B. H. (1971). Two decades of constructive effort: Anniversary volume.
Chicagoスタイル(17版)引用形式Colombo Plan Bureau, L. P. Goonetilleke, , Byung Hak Lee. Two Decades of Constructive Effort: Anniversary Volume. Colombo, 1971.
MLA(8版)引用形式Colombo Plan Bureau, et al. Two Decades of Constructive Effort: Anniversary Volume. 1971.
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