APA (7th ed.) Citation

De Coster, C., & Habets, P. (2006). Two-point boundary value problems: Lower and upper solutions. Elsevier.

Chicago Style (17th ed.) Citation

De Coster, Collete, and Patrick Habets. Two-point Boundary Value Problems: Lower and Upper Solutions. Amsterdam: Elsevier, 2006.

MLA (8th ed.) Citation

De Coster, Collete, and Patrick Habets. Two-point Boundary Value Problems: Lower and Upper Solutions. Elsevier, 2006.