English Language Services. (1966). Special english: Engineering. Collier Macmillan International.
Cita Chicago (17th ed.)English Language Services. Special English: Engineering. Nueva York: Collier Macmillan International, 1966.
Cita MLA (9th ed.)English Language Services. Special English: Engineering. Collier Macmillan International, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.