Das, P. L. Advanced social research methodology (4th.). Shree Jaynarayan.
Citazione stile Chigago Style (17a edizione)Das, Prabhakar Lal. Advanced Social Research Methodology. 4th. Rajbiraj: Shree Jaynarayan.
Citatione MLA (8a ed.)Das, Prabhakar Lal. Advanced Social Research Methodology. 4th. Shree Jaynarayan.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.