APA (7th ed.) Citation

Hassi, S., Snoo, H. S. V. d., & Szafraniec, F. H. (2012). Operator methods for boundary value problems. Cambridge University Press. https://doi.org/10.1017/CBO9781139135061

Chicago Style (17th ed.) Citation

Hassi, Seppo, Hendrik Simon Victor de Snoo, and Franciszek Hugon Szafraniec. Operator Methods for Boundary Value Problems. Cambridge: Cambridge University Press, 2012. https://doi.org/10.1017/CBO9781139135061.

MLA (9th ed.) Citation

Hassi, Seppo, et al. Operator Methods for Boundary Value Problems. Cambridge University Press, 2012. https://doi.org/10.1017/CBO9781139135061.