Sri Lanka. Tăpăl hā Viduli Sandēśa Amātyāṃśaya. Performance report - Ministry of Posts & Telecommunications. Ministry of Posts & Telecommunications.
Παραπομπή σε μορφή Chicago (17η εκδ.)Sri Lanka. Tăpăl hā Viduli Sandēśa Amātyāṃśaya. Performance Report - Ministry of Posts & Telecommunications. [Colombo]: Ministry of Posts & Telecommunications.
Παραπομπή σε μορφή MLA (8th εκδ.)Sri Lanka. Tăpăl hā Viduli Sandēśa Amātyāṃśaya. Performance Report - Ministry of Posts & Telecommunications. Ministry of Posts & Telecommunications.
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