Siddiqul, Mujibul Hasan. Research Methodology / Mujibul Hasan Siddiqul. - New Delhi : A P H publication corporation, 2014. - 280 p. : 26 cm. includes index. ISBN: 9788131307519 Subjects--Topical Terms: Research Methodology. Dewey Class. No.: 001.42 / SIR 2014