Khan, Q., & Scott, W. (1989). PL-480 in Pakistan, looking ahead: Submitted to USAID Pakistan. Development Economics Group, Louis Berger International.
Lua i Stíl Chicago (17ú heag.)Khan, Qaiser, agus William Scott. PL-480 in Pakistan, Looking Ahead: Submitted to USAID Pakistan. [S.I.]: Development Economics Group, Louis Berger International, 1989.
Lua MLA (8ú heag.)Khan, Qaiser, agus William Scott. PL-480 in Pakistan, Looking Ahead: Submitted to USAID Pakistan. Development Economics Group, Louis Berger International, 1989.
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