ELONKA, S. M. (1985). Standar boiler room: Questions and answers. Tata McGraw-Hill.
Cita Chicago Style (17a ed.)ELONKA, Stephen M. Standar Boiler Room: Questions and Answers. New Delhi: Tata McGraw-Hill, 1985.
Cita MLA (9a ed.)ELONKA, Stephen M. Standar Boiler Room: Questions and Answers. Tata McGraw-Hill, 1985.
Precaución: Estas citas no son 100% exactas.