Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. (1967). Government policy on private foreign investment. Ministry of Planning and Economic Affairs, Ceylon.
Chicago-viite (17. p.)Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. Government Policy on Private Foreign Investment. Colombo: Ministry of Planning and Economic Affairs, Ceylon, 1967.
MLA-viite (8. p.)Ceylon. Krama Sampādana hā Ārthika Kaṭayutu Amātyāṃśaya. Government Policy on Private Foreign Investment. Ministry of Planning and Economic Affairs, Ceylon, 1967.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.