V., C., R., Ward, B., J.(2001).Fourier series and boundary value problems / James Ward Brown, Ruel V. Churchill (Ed.ke-6).:McGraw-Hill.
Gaya MLA
Churchill, Ruel, V.., Brown, James, Ward."Fourier series and boundary value problems / James Ward Brown, Ruel V. Churchill".Ed.ke-6:McGraw-Hill,2001.Textbook.