Institute of Policy Studies (IPS) of Srilanka. (2011). Sri Lanka state of the economy 2011. Institute of Policy Studies (IPS) of Srilanka.
Chicago Style (17. basım) AtıfInstitute of Policy Studies (IPS) of Srilanka. Sri Lanka State of the Economy 2011. Colombo: Institute of Policy Studies (IPS) of Srilanka, 2011.
MLA (8th ed.) AtıfInstitute of Policy Studies (IPS) of Srilanka. Sri Lanka State of the Economy 2011. Institute of Policy Studies (IPS) of Srilanka, 2011.
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