Footnote or endnote:
3. First Name Last Name, interview by First Name Last Name, Title of Broadcasting Program, Production Company, Date.
Example:
3. Steven Spielberg, interview by Katie Couric, Good Morning America, ABC News, December 14, 2011, https://abcnews.go.com/GMA/video/spielberg-returns-directing-war-horse-15152627.
Bibliography entry:
Last Name, First Name. Title of Broadcasting Program. By First Name Last Name. Production Company. Date.
Example:
Spielberg, Steven. Good Morning America. By Katie Couric. ABC News. December 14, 2011. https://abcnews.go.com/GMA/video/spielberg-returns-directing-war-horse-15152627.