I'll list a few books which you can refer to :

 

NATA & B.Arch Question Bank  by Ar. Shadan Usmani

NATA & B.Arch complete self study material: entrance examination by  Ar. Shadan Usmani

A Complete Self Study Guide for B.Arch by P. K. Mishra

B.Arch Entrance Examination Guide by Surendra Kavimandan

Hello
NATA comprises of drawing, 2D, 3D and aesthetic sensitivity test. So there is no ideal book from where you can learn and the questions have no fixed pattern as they keep on changing. So don't just refer one book but, go through all books (or at least as many as you can). If there is something that you don't understand for example shade shadow, toning, different types of perspective drawings then you can also refer YouTube videos for reference.
list of few books which you can refer to :

•  NATA & B.Arch Question Bank  by Ar. Shadan Usmani
• NATA & B.Arch complete self study material: entrance examination by  Ar. Shadan Usmani
• A Complete Self Study Guide for B.Arch by P. K. Mishra
• B.Arch Entrance Examination Guide by Surendra Kavimandan

 Some coaching institutes also provide a full set of self study books. I'm adding a link to two such coaching institutes:

•  NATA Study Material and Online Test Series
• Buy Nata Entrance Books online- Mosaic Institute of Design

 
Apart from these you can try these also

• Books for NATA (National Aptitude Test in Architecture) and Architecture Aptitude Test
• Nata Study Material, Nata Books, Nata Model Papers, Nata Sample Papers Free Download

ALL THE BEST
THANK YOU

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