APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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