Cita APA (7th ed.)

Hackworth, J. R., & Hackworth, F. D. (2004). Programmable logic controllers: Programming methods and applications. Merrill, Pearson Education.

Cita Chicago (17th ed.)

Hackworth, John R., i Frederick D. Hackworth. Programmable Logic Controllers: Programming Methods and Applications. Upper Saddle River, N.J. : New Delhi,IN.: Merrill, Pearson Education, 2004.

Cita MLA (8th ed.)

Hackworth, John R., i Frederick D. Hackworth. Programmable Logic Controllers: Programming Methods and Applications. Merrill, Pearson Education, 2004.