Knauthe, H. E. (1966). Prospective Planning and Investment Decisions: Economic Problems Concerned with Preparation and Carrying out of Investments. The institute of national planning.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিKnauthe, Habil Erhart. Prospective Planning and Investment Decisions: Economic Problems Concerned with Preparation and Carrying Out of Investments. Cairo: The institute of national planning, 1966.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিKnauthe, Habil Erhart. Prospective Planning and Investment Decisions: Economic Problems Concerned with Preparation and Carrying Out of Investments. The institute of national planning, 1966.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.