APA
Sri Lanka National Library Services Board, . (1986). National seminar on universal availlability of publications ( UAP ), 24 - 25. 09. 1986. Colombo: Sri Lanka National Library Services Board.
Chicago
Sri Lanka National Library Services Board, . 1986. National seminar on universal availlability of publications ( UAP ), 24 - 25. 09. 1986. Colombo: Sri Lanka National Library Services Board.
Harvard
Sri Lanka National Library Services Board, . (1986). National seminar on universal availlability of publications ( UAP ), 24 - 25. 09. 1986. Colombo: Sri Lanka National Library Services Board.
MLA
Sri Lanka National Library Services Board, . National seminar on universal availlability of publications ( UAP ), 24 - 25. 09. 1986. Colombo: Sri Lanka National Library Services Board. 1986.