APA
(2009). Methodology of Educational Research / Lokesh Koul. New Delhi: VIKAS Publishing House PVT Ltd.
Chicago
2009. Methodology of Educational Research / Lokesh Koul. New Delhi: VIKAS Publishing House PVT Ltd.
Harvard
(2009). Methodology of Educational Research / Lokesh Koul. New Delhi: VIKAS Publishing House PVT Ltd.
MLA
Methodology of Educational Research / Lokesh Koul. New Delhi: VIKAS Publishing House PVT Ltd. 2009.