Gaya APA
Duffin, W. J.. (1990).
Electricity and magnetism (4th ed.).
England:
McGraw-Hill.
Gaya Chicago
Duffin, W. J..
Electricity and magnetism.
4th ed.
England:
McGraw-Hill,
1990.
Text.
Gaya MLA
Duffin, W. J..
Electricity and magnetism.
4th ed.
England:
McGraw-Hill,
1990.
Text.
Gaya Turabian
Duffin, W. J..
Electricity and magnetism.
4th ed.
England:
McGraw-Hill,
1990.
Print.