APA (7th ed.) Citation
Elonka, S. M., & Kohan, A. L. (1969). Standard boiler operators' questions and answers. McGraw-Hill.
Chicago Style (17th ed.) Citation
Elonka, Stephen Michael, and Anthony Lawrence Kohan. Standard Boiler Operators' Questions and Answers. New York ; New delhi: McGraw-Hill, 1969.
MLA (9th ed.) Citation
Elonka, Stephen Michael, and Anthony Lawrence Kohan. Standard Boiler Operators' Questions and Answers. McGraw-Hill, 1969.
Warning: These citations may not always be 100% accurate.