Pare, E. (1977). Descriptive geometry (5th ed.). Macmillan.
Cita Chicago (17th ed.)Pare, E.G. Descriptive Geometry. 5th ed. New york: Macmillan, 1977.
Cita MLA (9th ed.)Pare, E.G. Descriptive Geometry. 5th ed. Macmillan, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.