quote for right before sophia grace and rosie talk to ellen:

[...] It has been found that the more importance adolescents give to a certain type of music, the more attention they will pay to the lyrics ... Although young listeners might not understand all the details in lyrics, they recognize enough to obtain a general idea of the message they bring.

after beyonce sequence and before woman speaks on breast implants:

[...]Research has reported that exposure to violence, sexual messages, sexual stereotypes, and use of substances of abuse in music videos might produce significant changes in behaviors and attitudes of young viewers ... Frequent watching of music videos has been related to an increased risk of developing beliefs in false stereotypes and an increased perceived importance of appearance and weight in adolescent girls.

if you want to cite it:

. "Impact of Music, Music Lyrics, and Music Videos on Children and Youth." The American Academy of Pediatrics. Pediatrics, 10/19/2009. Web. <http://pediatrics.aappublications.org/content/124/5/1488.full>.

or just say it's from the American Academy of Pediatrics