Ballinger, J. T. (1999). Chemical operator's portable handbook. McGraw Hill.
Cita Chicago (17th ed.)Ballinger, Jack T. Chemical Operator's Portable Handbook. Nueva York: McGraw Hill, 1999.
Cita MLA (9th ed.)Ballinger, Jack T. Chemical Operator's Portable Handbook. McGraw Hill, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.