Can I use ISOGG YSNP Tree data?
From ISOGG Wiki
Yes! The ISOGG YSNP Tree was compiled to share SNP data for everyone. When using data, please cite ISOGG and any other source information included.
Please cite the ISOGG YSNP Tree as follows:
International Society of Genetic Genealogy (2016). Y-DNA Haplogroup Tree 2016, Version: [Number given at top of Main Page], Date: [Date given at top of Main Page], http://www.isogg.org/tree/ [Date of access: Day, Month, Year].
An example citation.
International Society of Genetic Genealogy (2016). Y-DNA Haplogroup Tree 2016, Version: 11.308, Date: 11 November 2016, http://www.isogg.org/tree/ 16 November 2016.