APA

Natural Resources E. &. S. A. o. S. L., .Social science research methodology; seminar report, 24 August - 13 September 1980. s.l: Natural Resources.

Chicago

Natural Resources Energy & Science Authority of Sri Lanka, .Social science research methodology; seminar report, 24 August - 13 September 1980. s.l: Natural Resources.

Harvard

Natural Resources E. &. S. A. o. S. L., .Social science research methodology; seminar report, 24 August - 13 September 1980. s.l: Natural Resources.

MLA

Natural Resources Energy & Science Authority of Sri Lanka, .s.l: Natural Resources. .