Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. (1980). Bulletin of selected retail prices, 1978 to 1980. Dept. of Census and Statistics, Ministry of Plan Implementation.
Chicago-referens (17:e uppl.)Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. Bulletin of Selected Retail Prices, 1978 to 1980. [Colombo]: Dept. of Census and Statistics, Ministry of Plan Implementation, 1980.
MLA-referens (8:e uppl.)Sri Lanka. Janalēkhana hā Saṅkhyālēkhana Depārtamēntuva. Bulletin of Selected Retail Prices, 1978 to 1980. Dept. of Census and Statistics, Ministry of Plan Implementation, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.