Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Heymann, Frederick Gotthold. Poland & Czechoslovakia Republic. Englewood Cliffs, N.J: Prentice-Hall, 1966.

Cita MLA (9th ed.)

Heymann, Frederick Gotthold. Poland & Czechoslovakia Republic. Prentice-Hall, 1966.