Cita APA (7a ed.)

Spence, W. P. (1984). Engineering graphics. Prentice-Hall.

Cita Chicago Style (17a ed.)

Spence, William P. Engineering Graphics. Englewood Cliffs: Prentice-Hall, 1984.

Cita MLA (9a ed.)

Spence, William P. Engineering Graphics. Prentice-Hall, 1984.