APA استشهاد

(1978). National Sample Survey: Some Summary information on employment and unemployment;Report No:20. Report No.23.1988. Directorate of Economics & Statishics..

استشهاد بنمط شيكاغو

National Sample Survey: Some Summary Information on Employment and Unemployment;Report No:20. Report No.23.1988. Trivandrum: Directorate of Economics & Statishics., 1978.

MLA استشهاد

National Sample Survey: Some Summary Information on Employment and Unemployment;Report No:20. Report No.23.1988. Directorate of Economics & Statishics., 1978.