O'Neil appointed to coaching staff. AFCB [online]. 2021-02-23 [cit. 2023-08-16]. Dostupné online.
foxsports.com.au
Premier League battlers sack manager just FOUR games in after 9-0 thrashing. Fox Sports [online]. 2022-08-30 [cit. 2023-08-16]. Dostupné online. (anglicky)
theguardian.com
FISHER, Ben. Bournemouth appoint Andoni Iraola as manager after sacking Gary O’Neil. The Guardian. 2023-06-19. Dostupné online [cit. 2023-08-16]. ISSN0261-3077. (anglicky)
MEDIA, P. A. Wolves confirm Gary O’Neil as manager after Julen Lopetegui’s exit. The Guardian. 2023-08-09. Dostupné online [cit. 2023-08-16]. ISSN0261-3077. (anglicky)
transfermarkt.com
Gary O'Neil - Stats by competition. www.transfermarkt.com [online]. [cit. 2023-08-16]. Dostupné online. (anglicky)
worldcat.org
FISHER, Ben. Bournemouth appoint Andoni Iraola as manager after sacking Gary O’Neil. The Guardian. 2023-06-19. Dostupné online [cit. 2023-08-16]. ISSN0261-3077. (anglicky)
MEDIA, P. A. Wolves confirm Gary O’Neil as manager after Julen Lopetegui’s exit. The Guardian. 2023-08-09. Dostupné online [cit. 2023-08-16]. ISSN0261-3077. (anglicky)