Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. (1967). Government policy on private foreign investment. Ministry of Planning and Economic Affairs, Ceylon.
Chicago-referens (17:e uppl.)Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. Government Policy on Private Foreign Investment. Colombo: Ministry of Planning and Economic Affairs, Ceylon, 1967.
MLA-referens (8:e uppl.)Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. Government Policy on Private Foreign Investment. Ministry of Planning and Economic Affairs, Ceylon, 1967.
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