APA (7th ed.) Citation

Grzebień, L. Koppens Romuald Andrzej.

Chicago Style (17th ed.) Citation

Grzebień, Ludwik. Koppens Romuald Andrzej.

MLA (9th ed.) Citation

Grzebień, Ludwik. Koppens Romuald Andrzej.

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