LAWRENCE PERKO. (2001). DIFFERENTIAL EQUATIONS AND DYNAMICAL SYSTEMS (3ED.). SPRINGER.
Lua i Stíl Chicago (17ú heag.)LAWRENCE PERKO. DIFFERENTIAL EQUATIONS AND DYNAMICAL SYSTEMS. 3ED. SPRINGER, 2001.
Lua MLA (9ú heag.)LAWRENCE PERKO. DIFFERENTIAL EQUATIONS AND DYNAMICAL SYSTEMS. 3ED. SPRINGER, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.