Hello  Lavanya,

The best preferred books for architecture are as follows-

• Experiencing Architecture by Steen Eiler Rasmussen.
• Form, Space and Order by Francis D.K. Ching. 
• Essays in Architectural Criticism or Modernity and the Classical Tradition by Alan Colquhoun. 
• Modern Architecture (2 vols.) by Leonardo Benevolo.
• Making Space by Matrix. 
• Lessons for Students in Architecture by Herman Hertzberger. 
• Flesh and Stone by Richard Sennett. 
• The Hidden Dimension by Edward T. Hall. 
• Elements of Architecture by Rem Koolhaas
• Translations from Drawings to Buildings by Robin Evans
• Changing Ideals in Modern Architectureby Peter Collins
• Architecture and Utopia by Manfredo Tafuri

Hope it helped you

Thank you