APA (7th ed.) Citation

Rudziński, R., & Jaspers, K. (1978). Jaspers. Wiedza Powszechna.

Chicago Style (17th ed.) Citation

Rudziński, Roman, and Karl Jaspers. Jaspers. Warszawa: Wiedza Powszechna, 1978.

MLA (9th ed.) Citation

Rudziński, Roman, and Karl Jaspers. Jaspers. Wiedza Powszechna, 1978.