To cite PsyGeNET in your publications:

Alba Gutiérrez-Sacristán; Àlex Bravo; Marta Portero-Tresserra; Olga Valverde; ... Laura I. Furlong "Text mining and expert curation to develop a database on psychiatric diseases and their genes" Database 2017(1)

Alba Gutiérrez-Sacristán; Solène Grosdidier; Olga Valverde; Marta Torrens; Àlex Bravo; Janet Pinero; Ferran Sanz; Laura I. Furlong "PsyGeNET: a knowledge platform on psychiatric disorders and their genes" Bioinformatics 2015; doi: 10.1093/bioinformatics/btv301

To cite specific data from PsyGeNET:

Gene-disease association data were retrieved from the PsyGeNET Database, GRIB/IMIM/UPF Integrative Biomedical Informatics Group, Barcelona.(,[Month, year of data retrieval].