Islam, M. N. (2008). An introduction to research methods. Mullik Brothers.
Chicago Style (17th ed.) ZitazioaIslam, M. Nurul. An Introduction to Research Methods. Dhaka: Mullik Brothers, 2008.
MLA (9th ed.) ZitazioaIslam, M. Nurul. An Introduction to Research Methods. Mullik Brothers, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.