Cita APA (7a ed.)

Gumkowski, J., Leszczyński, K., & Rothert, E. (1961). Poland under Nazi occupation. Polonia Publishing House.

Cita Chicago Style (17a ed.)

Gumkowski, Janusz, Kazimierz Leszczyński, y Edward Rothert. Poland Under Nazi Occupation. Warszawa: Polonia Publishing House, 1961.

Cita MLA (9a ed.)

Gumkowski, Janusz, et al. Poland Under Nazi Occupation. Polonia Publishing House, 1961.