APA (7th ed.) Citation

Feltrin, G. (2018). Positive solutions to indefinite problems: A topological approach. Birkhäuser.

Chicago Style (17th ed.) Citation

Feltrin, Guglielmo. Positive Solutions to Indefinite Problems: A Topological Approach. Cham, Switzerland: Birkhäuser, 2018.

MLA (9th ed.) Citation

Feltrin, Guglielmo. Positive Solutions to Indefinite Problems: A Topological Approach. Birkhäuser, 2018.

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