A list of references that other media make to Sket Dance anime and manga series.
In chapter 69 of the manga, during the school festival, there are two guys cosplaying as Bossun and Switch. There are also people dressed as Ageha Yoshina, Kyle and Frederica from the manga Psyren. It's worth noting that Sket Dance referenced Beelzebub in the chapter 86 of the manga, during the Kaimei festival, when Bossun said that Himeko looked like Hilda in her maid outfit.
In chapter 4, there's a flashback scene where the main characters are trying to come up with a name for their club. One of the rejected names is "Sket Dan". Other two rejected names are "SOS Brigade" from the novel series "Haruhi Suzumiya" and "Eagle Talon" from the anime series of the same name.