APA (7th ed.) Citation

Fraenkel, L. E. (2000). An introduction to maximum principles and symmetry in elliptic problems. Cambridge University Press. https://doi.org/10.1017/CBO9780511569203

Chicago Style (17th ed.) Citation

Fraenkel, L. Edward. An Introduction to Maximum Principles and Symmetry in Elliptic Problems. Cambridge: Cambridge University Press, 2000. https://doi.org/10.1017/CBO9780511569203.

MLA (9th ed.) Citation

Fraenkel, L. Edward. An Introduction to Maximum Principles and Symmetry in Elliptic Problems. Cambridge University Press, 2000. https://doi.org/10.1017/CBO9780511569203.