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sjearthquakes.com
SJEARTHQUAKES. NEWS: Earthquakes Sign Slovakian Midfielder Jan Gregus | San Jose Earthquakes [online]. sjearthquakes, [cit. 2023-08-28]. Dostupné online. (po anglicky)
sme.sk
sportnet.sme.sk
Greguš mení klub, proti Messimu si zahrá stále. Vracia sa do Minnesoty [online]. sportnet.sme.sk, [cit. 2023-08-28]. Dostupné online.
startribune.com
TRIBUNE, Jerry Zgoda Star. Minnesota United adds FC Copenhagen's Jan Gregus as third designated player [online]. Star Tribune, [cit. 2023-08-28]. Dostupné online.
usatoday.com
Slovakia midfielder Jan Gregus moves to Copenhagen [online]. USA TODAY, [cit. 2023-08-28]. Dostupné online. (po anglicky)