APA引文

Head, G. O., & Pietra, C. A. S. (1990). Auto CAD 3D book. Galgotia.

Chicago Edition Citation

Head, George O., and Charles A. Segal Pietra. Auto CAD 3D Book. New Delhi: Galgotia, 1990.

MLA引文

Head, George O., and Charles A. Segal Pietra. Auto CAD 3D Book. Galgotia, 1990.

警告：這些引文格式不一定是100％准確.