Cita APA

Schumann, C. H. n. 1., & Schumann, C. H. n. 1. (1977). Descriptive geometry: A treatise on the graphics of space for the scientific professions (4. edition.). Princeton, N.J.: Van Nostrand.

Citación estilo Chicago

Schumann, Charles Henry n. 1893, y Charles Henry n. 1893 Schumann. Descriptive Geometry: A Treatise On the Graphics of Space for the Scientific Professions. 4. edition. Princeton, N.J.: Van Nostrand, 1977.

Cita MLA

Schumann, Charles Henry n. 1893, y Charles Henry n. 1893 Schumann. Descriptive Geometry: A Treatise On the Graphics of Space for the Scientific Professions. 4. edition. Princeton, N.J.: Van Nostrand, 1977.