Bhatt, N. D. (1980). Elementary engineering drawing (16.). Charotar publishing house.
Chicago Edition CitationBhatt, N D. Elementary Engineering Drawing. 16. Anand: Charotar publishing house, 1980.
MLA引文Bhatt, N D. Elementary Engineering Drawing. 16. Charotar publishing house, 1980.
警告:這些引文格式不一定是100%准確.