Cita APA (7a ed.)

Heymann, F. G. (1966). Poland & Czechoslovakia. Prentice-Hall.

Cita Chicago Style (17a ed.)

Heymann, Frederick G. Poland & Czechoslovakia. Englewood Cliffs: Prentice-Hall, 1966.

Cita MLA (9a ed.)

Heymann, Frederick G. Poland & Czechoslovakia. Prentice-Hall, 1966.