Cita APA (7th ed.)
Poynting, J. H., & Thomson, J. J. A Textbook of Physics: Sound.
Cita Chicago (17th ed.)
Poynting, John Henry, i Joseph John Thomson. A Textbook of Physics: Sound.
Cita MLA (9th ed.)
Poynting, John Henry, i Joseph John Thomson. A Textbook of Physics: Sound.
Atenció: Aquestes cites poden no estar 100% correctes.