APA (7th ed.) Citation

Reissig, R., Sansone, G., & Conti, R. (1974). Νοn-linear differential equations of higher order. Noordhoff.

Chicago Style (17th ed.) Citation

Reissig, R., Giovanni Sansone, and R. Conti. Νοn-linear Differential Equations of Higher Order. Leyden: Noordhoff, 1974.

MLA (8th ed.) Citation

Reissig, R., et al. Νοn-linear Differential Equations of Higher Order. Noordhoff, 1974.