Whitsitt, M. E. (1988). Feasibility study manual for cooperatives. Cooperative Foundation Philippines.
芝加哥风格引文Whitsitt, Mac E. Feasibility Study Manual for Cooperatives. Quezon City: Cooperative Foundation Philippines, 1988.
MLA引文Whitsitt, Mac E. Feasibility Study Manual for Cooperatives. Cooperative Foundation Philippines, 1988.
警告：这些引文格式不一定是100％准确.