Gaya APA
Practical Electricity. (1940).
USA:
McGraw-Hill Book Company.
Gaya Chicago
Practical Electricity.
4th Ed.
USA:
McGraw-Hill Book Company,
1940.
Text.
Gaya MLA
Practical Electricity.
4th Ed.
USA:
McGraw-Hill Book Company,
1940.
Text.
Gaya Turabian
Practical Electricity.
USA:
McGraw-Hill Book Company,
1940.
Print.