European Polygraph is covered by the following services:
- Arianta
- Baidu Scholar
- Cabell's Journalytics
- CEEAS (Central & Eastern European Academic Source)
- CEJSH (The Central European Journal of Social Sciences and Humanities)
- CNKI Scholar (China National Knowledge Infrastructure)
- Dimensions
- EBSCO
- ExLibris
- Google Scholar
- Index Copernicus International
- J-Gate
- JournalTOCs
- MyScienceWork
- Naver Academic
- Naviga (Softweco)
- ReadCube
- ScienceON/AccessON
- SCILIT
- Scite_
- Semantic Scholar
- Sherpa/RoMEO
- TDNet
- Ulrich's Periodicals Directory/ulrichsweb
- WanFang Data
- WorldCat (OCLC)
- X-MOL
Additionally, the journal is registered and indexed in the Crossref database.