Purushothaman, Vijayalakshmi, U. Kupputhai, and N. Devi Meenakshi. 1988. “Nutritional Profile of Selected Expectant Mothers and the Cost of Pregnancy”. The Indian Journal of Nutrition and Dietetics 25 (8):247-53. https://informaticsjournals.co.in/index.php/ijnd/article/view/13597.