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APA Citation

(2002). TCVN 8 -21: 2005. ISO 128 -21: 1997. Bản vẽ kỹ thuật- Nguyên tắc chung về biểu diễn. Phần 21: Chuẩn bị các nét vẽ trên bản vẽ cho hệ thống CAD. H.: Tiêu chuẩn Việt Nam.

Trích dẫn kiểu Chicago

TCVN 8 -21: 2005. ISO 128 -21: 1997. Bản Vẽ Kỹ Thuật- Nguyên Tắc Chung Về Biểu Diễn. Phần 21: Chuẩn Bị Các Nét Vẽ Trên Bản Vẽ Cho Hệ Thống CAD. H.: Tiêu chuẩn Việt Nam, 2002.

MLA Citation

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