APA (7th ed.) Citation

Topological nonlinear analysis: Degree, singularity, and variations. Birkhäuser.

Chicago Style (17th ed.) Citation

Topological Nonlinear Analysis: Degree, Singularity, and Variations. Boston [u.a.]: Birkhäuser.

MLA (9th ed.) Citation

Topological Nonlinear Analysis: Degree, Singularity, and Variations. Birkhäuser.

Warning: These citations may not always be 100% accurate.