Lua APA (7ú heag.)

SAMPATH S. (2005). SAMPLING THEORY AND METHODS (2ND.). NAROSA PUBLISHING HOUSE.

Lua i Stíl Chicago (17ú heag.)

SAMPATH S. SAMPLING THEORY AND METHODS. 2ND. NEW DELHI: NAROSA PUBLISHING HOUSE, 2005.

Lua MLA (9ú heag.)

SAMPATH S. SAMPLING THEORY AND METHODS. 2ND. NAROSA PUBLISHING HOUSE, 2005.

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