reference
1. Varghese. M.A. N. N. Ogale and Srinivasan.K, Home management, Wiley earthen Ltd
2. Premlata Mullica.2000, Text book of home science. Kalyani Publishers.,New Delhi
3. Ragubalan , G. Srimathi Ragubalan. (2007) Hotel House Keeping Operations & Management published in India by Oxford University Press , First Publications.