Cita APA (7a ed.)
Viorel Barbu. Differential Equations. Springer.
Cita estilo Chicago (17a ed.)
Viorel Barbu. Differential Equations. Cham, Suiza: Springer.
Cita MLA (9a ed.)
Viorel Barbu. Differential Equations. Springer.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.