Cita APA

Sagan, H., & Sagan, H. (1961). Boundary and eigenvalue problems in mathematical physics. New York, New York: J. Wiley.

Citación estilo Chicago

Sagan, Hans, y Hans Sagan. Boundary and Eigenvalue Problems in Mathematical Physics. New York, New York: J. Wiley, 1961.

Cita MLA

Sagan, Hans, y Hans Sagan. Boundary and Eigenvalue Problems in Mathematical Physics. New York, New York: J. Wiley, 1961.