APA-referens (7:e uppl.)

Institute of Policy Studies (IPS) of Srilanka. (2011). Sri Lanka state of the economy 2011. Institute of Policy Studies (IPS) of Srilanka.

Chicago-referens (17:e uppl.)

Institute of Policy Studies (IPS) of Srilanka. Sri Lanka State of the Economy 2011. Colombo: Institute of Policy Studies (IPS) of Srilanka, 2011.

MLA-referens (8:e uppl.)

Institute 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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