Hajela, T. N. (2000). Co-operation: Principles, problems and practice. Konark Publishers pvt ltd.
シカゴスタイル引用形Hajela, T. N. Co-operation: Principles, Problems and Practice. Delhi: Konark Publishers pvt ltd, 2000.
MLA引用形式Hajela, T. N. Co-operation: Principles, Problems and Practice. Konark Publishers pvt ltd, 2000.
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