Frisch, R. (2025). HOW TO PLAN/ كيف نخطط. The Institute of National Planning.
芝加哥风格引文Frisch, Ragnar. HOW TO PLAN/ كيف نخطط. The Institute of National Planning, 2025.
MLA引文Frisch, Ragnar. HOW TO PLAN/ كيف نخطط. The Institute of National Planning, 2025.
警告：这些引文格式不一定是100％准确.