APA (7th ed.) Citation

Schwager, J. D., & Jania, M. Fachowa porada.

Chicago Style (17th ed.) Citation

Schwager, Jack D.., and Magdalena Jania. Fachowa Porada.

MLA (9th ed.) Citation

Schwager, Jack D.., and Magdalena Jania. Fachowa Porada.

Warning: These citations may not always be 100% accurate.