Gregory, J. (1980). Quadratic form theory and differential equations. Academic Press.
Citación estilo ChicagoGregory, John. Quadratic Form Theory and Differential Equations. Nueva York: Academic Press, 1980.
Cita MLAGregory, John. Quadratic Form Theory and Differential Equations. Academic Press, 1980.
Warning: These citations may not always be 100% accurate.