Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.
APA4ort.xyz Knowledge Graph. (2026). Henryk Marcak. Retrieved May 24, 2026, from https://4ort.xyz/entity/henryk-marcak
BibTeX@misc{4ortxyz_henryk-marcak_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Henryk Marcak}}, year = {2026}, url = {https://4ort.xyz/entity/henryk-marcak}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Henryk Marcak — https://4ort.xyz/entity/henryk-marcak (retrieved 2026-05-24)