Παραπομπή APA

India. Directorate of National Sample Survey. (1971). National sample survey no. 191, 18th round tables with notes on consumer expenditure in urban areas. National Sample Survey Organisation.

Παραπομπή Chicago Style

India. Directorate of National Sample Survey. National Sample Survey No. 191, 18th Round Tables with Notes on Consumer Expenditure in Urban Areas. Delhi: National Sample Survey Organisation, 1971.

Παραπομπή MLA

India. Directorate of National Sample Survey. National Sample Survey No. 191, 18th Round Tables with Notes on Consumer Expenditure in Urban Areas. National Sample Survey Organisation, 1971.