IEEE Std C57.21-1990 : IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA
MLA
Institute of Electrical and Electronics Engineers. IEEE Std C57.21-1990 : IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA. New York, USA : IEEE, 1990.
APA
Institute of Electrical and Electronics Engineers. (1990). IEEE Std C57.21-1990 : IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA. New York, USA : IEEE.
Chicago
Institute of Electrical and Electronics Engineers. IEEE Std C57.21-1990 : IEEE Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA. New York, USA : IEEE, 1990.