APA (7th ed.) Citation

Wyrzykowski, P. (2014). Grandfather's memories. Under German occupation.

Chicago Style (17th ed.) Citation

Wyrzykowski, Piotr. "Grandfather's Memories." Under German Occupation 2014.

MLA (8th ed.) Citation

Wyrzykowski, Piotr. "Grandfather's Memories." Under German Occupation, 2014.

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