Elonka, S. M. (1959). Standard plant operator's question and answers: A modern license-examination review course for plant, refrigeration, steam, diesel, nuclear, eletrical and building engineers. McGraw-Hill.
Chicago-Zitierstil (17. Ausg.)Elonka, Stephen Michael. Standard Plant Operator's Question and Answers: A Modern License-examination Review Course for Plant, Refrigeration, Steam, Diesel, Nuclear, Eletrical and Building Engineers. New York [u.a.]: McGraw-Hill, 1959.
MLA-Zitierstil (9. Ausg.)Elonka, Stephen Michael. Standard Plant Operator's Question and Answers: A Modern License-examination Review Course for Plant, Refrigeration, Steam, Diesel, Nuclear, Eletrical and Building Engineers. McGraw-Hill, 1959.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.