The genealogy program “Who Do You Think You Are?” returns at 9 p.m. July 26 on TLC.

This program has been running for a number of years and features professional genealogists helping celebrities trace their ancestry. They can only trace one portion of any celebrity’s roots, and often pick the most interesting.

Those celebrities announced so far include: Tom Bergeron, Bryan Cranston, Ginnifer Goodwin and Alfre Woodard. The series also will air an episode from the British version of the program featuring J.K. Rowling, author of the “Harry Potter” books.

The ancestry.com genealogy team provides the research for the show. For previously aired segments, see tlc.com. TLC appears at different channel locations around the metro Atlanta area, so check your cable or satellite provider.

Scotland’s ancestry tourism

If you are planning a journey to Scotland to search for your roots, you are in luck, as the Scottish tourism organization has revamped its website.

The website’s genealogy page can help potential tourists find people and places they need, especially reputable tours of historic places, as well as archives and other research centers to access records. Also, some personalized ancestral tours can be arranged.

Go to visitscotland.com, use the drop-down About menu to find ancestry, and see where it leads you. There is more than enough there to help you figure out how to make the best of a visit to Scotland.

Citing genetic sources

The prevalence of genetic genealogy results has resulted in the need to have an authoritative way to cite genetic or DNA results in our genealogy writings and family histories.

Elizabeth Shown Mills, an authority on proper genealogy document citations, has written a Quicksheet, “Citing Genetic Sources for History Research.”

She defines various terms that are used, covers the basic tests, provides basic citation formats and gives clear examples of proper citations. These include those from Family Finder tests at Family Tree DNA, GEDMatch, and ethnicity predictions as well as ancestry DNA circles from ancestry.com.

One thing to remember when citing a website: You always should include the date accessed.

Mills' laminated four-page sheet is available for $9.95 plus $4.50 postage from Genealogical Publishing Co., 3600 Clipper Mill Road, No. 260, Baltimore, MD 21211 or genealogical.com.