APA (7th ed.) Citation

Kubiak, M. A., & Korzeniewska, I. (1973). Astronomical observatories in Poland. PWN Polish Scientific Publishers.

Chicago Style (17th ed.) Citation

Kubiak, Marcin Antoni, and Iwona Korzeniewska. Astronomical Observatories in Poland. Warszawa: PWN Polish Scientific Publishers, 1973.

MLA (9th ed.) Citation

Kubiak, Marcin Antoni, and Iwona Korzeniewska. Astronomical Observatories in Poland. PWN Polish Scientific Publishers, 1973.