APA (7th ed.) Citation

Feltrin, G. (2018). Positive solutions to indefinite problems: A topological approach. Birkhäuser. https://doi.org/10.1007/978-3-319-94238-4

Chicago Style (17th ed.) Citation

Feltrin, Guglielmo. Positive Solutions to Indefinite Problems: A Topological Approach. Cham: Birkhäuser, 2018. https://doi.org/10.1007/978-3-319-94238-4.

MLA (9th ed.) Citation

Feltrin, Guglielmo. Positive Solutions to Indefinite Problems: A Topological Approach. Birkhäuser, 2018. https://doi.org/10.1007/978-3-319-94238-4.