(1978). How to develop project feasibility studies. Philipin: Sinag-Tala.
シカゴスタイル引用形How to Develop Project Feasibility Studies. Philipin: Sinag-Tala, 1978.
MLA引用形式How to Develop Project Feasibility Studies. Philipin: Sinag-Tala, 1978.
警告: この引用は必ずしも正確ではありません.