APA (7th ed.) Citation

Ghoussoub, N. (1993). Duality and perturbation methods in critical point theory. Cambridge University Press. https://doi.org/10.1017/CBO9780511551703

Chicago Style (17th ed.) Citation

Ghoussoub, N. Duality and Perturbation Methods in Critical Point Theory. Cambridge: Cambridge University Press, 1993. https://doi.org/10.1017/CBO9780511551703.

MLA (9th ed.) Citation

Ghoussoub, N. Duality and Perturbation Methods in Critical Point Theory. Cambridge University Press, 1993. https://doi.org/10.1017/CBO9780511551703.