APA (7th ed.) Citation

Coppel, W. A. (1971). Disconjugacy. Springer. https://doi.org/10.1007/BFb0058618

Chicago Style (17th ed.) Citation

Coppel, William A. Disconjugacy. Berlin [u.a.]: Springer, 1971. https://doi.org/10.1007/BFb0058618.

MLA (9th ed.) Citation

Coppel, William A. Disconjugacy. Springer, 1971. https://doi.org/10.1007/BFb0058618.