Elonka, S. M., & Kohan, A. L. (1969). Standard boiler operators' questions and answers. McGraw-Hill.
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芝加哥风格引文
Elonka, Stephen Michael, 与 Anthony Lawrence Kohan. Standard Boiler Operators' Questions and Answers. New York ; New delhi: McGraw-Hill, 1969.
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MLA引文
Elonka, Stephen Michael, 与 Anthony Lawrence Kohan. Standard Boiler Operators' Questions and Answers. McGraw-Hill, 1969.
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警告：这些引文格式不一定是100％准确.