Bhatt, N., & Panchal,V.M. (1996). Elementary engineering drawing (37th ed.). Charotar Publishing House.
Styl ChicagoBhatt, N.D, a Panchal,V.M. Elementary Engineering Drawing. 37th ed. Gujarat: Charotar Publishing House, 1996.
Citace podle MLABhatt, N.D, a Panchal,V.M. Elementary Engineering Drawing. 37th ed. Charotar Publishing House, 1996.
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