Bhatt, N. D. (1993). Elementary engineering drawing. Anand.
Chicago Edition CitationBhatt, N D. Elementary Engineering Drawing. Charotar: Anand, 1993.
ציטוט MLABhatt, N D. Elementary Engineering Drawing. Anand, 1993.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.