Citazione APA

Jaspal Singh. (1991). Methods of social research, introduction (Ed.2 rev & enl.).

Stile di citazione Chicago

Jaspal Singh. Methods of Social Research, Introduction. Ed.2 rev & enl. New Delhi, sterling Publishers, 1991.

Citazione MLA

Jaspal Singh. Methods of Social Research, Introduction. Ed.2 rev & enl. 1991.