Cita APA

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

Chicago Edition Citation

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

Cita MLA

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