APA (7th ed.) Citation

Powers, D. L. (1972). Boundary value problems. Acad. Press.

Chicago Style (17th ed.) Citation

Powers, David Leusch. Boundary Value Problems. New York [u.a.]: Acad. Press, 1972.

MLA (9th ed.) Citation

Powers, David Leusch. Boundary Value Problems. Acad. Press, 1972.