Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. (1980). National accounts of Sri Lanka, 1971-1979. Dept. of Census and Statistics, Ministry of Plan Implementation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. National Accounts of Sri Lanka, 1971-1979. [Colombo]: Dept. of Census and Statistics, Ministry of Plan Implementation, 1980.
Παραπομπή σε μορφή MLA (8th εκδ.)Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. National Accounts of Sri Lanka, 1971-1979. Dept. of Census and Statistics, Ministry of Plan Implementation, 1980.
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