Cita APA (7a ed.)

Johnson C. M. & Johnson D. (1998). General Engineering. New York, Language Teaching Publications, 1998.

Cita Chicago Style (17a ed.)

Johnson C. M. y Johnson D. General Engineering. New York, Language Teaching Publications, 1998, 1998.

Cita MLA (9a ed.)

Johnson C. M. y Johnson D. General Engineering. New York, Language Teaching Publications, 1998, 1998.