APA (7th ed.) Citation

Hassi, S., Snoo, H. S. V. d., & Szafraniec, F. H. (2012). Operator methods for boundary value problems. Cambridge University Press.

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.

MLA (9th ed.) Citation

Hassi, Seppo, et al. Operator Methods for Boundary Value Problems. Cambridge University Press, 2012.