APA
India (. o. P., India (. o. P., . (1981). Statistical Abstract. Chandigarh: Economic adviser to govt. of Punjab.
Chicago
India (Govt of Punjab), India (Govt of Punjab), . 1981. Statistical Abstract. Chandigarh: Economic adviser to govt. of Punjab.
Harvard
India (. o. P., India (. o. P., . (1981). Statistical Abstract. Chandigarh: Economic adviser to govt. of Punjab.
MLA
India (Govt of Punjab), India (Govt of Punjab), . Statistical Abstract. Chandigarh: Economic adviser to govt. of Punjab. 1981.