Ward, R. P. (1960). Introduction to electrical engineering (3rd ed.). Prentice-Hall.
Chicago-viite (17. p.)Ward, Robert Page. Introduction to Electrical Engineering. 3rd ed. New York ; New Delhi: Prentice-Hall, 1960.
MLA-viite (8. p.)Ward, Robert Page. Introduction to Electrical Engineering. 3rd ed. Prentice-Hall, 1960.
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