APA (7th ed.) Citation

Elonka lhStephen M. & Kohan. Standard boiler operators: Questions and answers.

Chicago Style (17th ed.) Citation

Elonka lhStephen M. and Kohan. Standard Boiler Operators: Questions and Answers. BombaylbTata, McGraw-Hill lc1969.

MLA (9th ed.) Citation

Elonka lhStephen M. and Kohan. Standard Boiler Operators: Questions and Answers.

Warning: These citations may not always be 100% accurate.