Cita APA (7a ed.)

Epstein, D. I. (1956). On the functions of the parabolic cylinder. [s.n.].

Cita Chicago Style (17a ed.)

Epstein, David I. On the Functions of the Parabolic Cylinder. New York: [s.n.], 1956.

Cita MLA (9a ed.)

Epstein, David I. On the Functions of the Parabolic Cylinder. [s.n.], 1956.