Alias Betty Burbridge/ Robert Bridgewood

Hello,

I am researching a Hollywood personality as part of my work. On the page of Betty Burbridge, it is written that she got Robert Bridgewood as an alias. I wanted to know how can I retrieve the source used for this mention. I do not wish to remove this mention! I only want to be abe to contact the person who registered it, or obtain the source.

Thank you for your help! Yours faithfully.