Cita APA (7th ed.)
Shupe, H. W., & Machovina, P. E. (1956). A Manual of engineering geometry and graphics for students and draftsmen: Holly W. Shupe and Paul E. Machovina. Mc Graw Hill.
Cita Chicago (17th ed.)
Shupe, Hollie W., i Paul E. Machovina. A Manual of Engineering Geometry and Graphics for Students and Draftsmen: Holly W. Shupe and Paul E. Machovina. New York: Mc Graw Hill, 1956.
Cita MLA (9th ed.)
Shupe, Hollie W., i Paul E. Machovina. A Manual of Engineering Geometry and Graphics for Students and Draftsmen: Holly W. Shupe and Paul E. Machovina. Mc Graw Hill, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.