O'Neil, P. V. (2014). Beginning partial differential equations (Third edition.). Wiley.
Cita Chicago (17th ed.)O'Neil, Peter V. Beginning Partial Differential Equations. Third edition. Hoboken, New Jersey: Wiley, 2014.
Cita MLA (9th ed.)O'Neil, Peter V. Beginning Partial Differential Equations. Third edition. Wiley, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.