(1971). Fourth five year plan1968-74: :summary. The Director, Publication Division, Ministry of information and broadcasting, Government of India.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Fourth Five Year Plan1968-74: :summary. New Delhi: The Director, Publication Division, Ministry of information and broadcasting, Government of India, 1971.
MLA -ийн эшлэл (9 дэх хэвлэлт)Fourth Five Year Plan1968-74: :summary. The Director, Publication Division, Ministry of information and broadcasting, Government of India, 1971.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.