Miller, John. „2017 Comic Book Sales to Comics Shops“. Comichron. Suarchyvuotas originalas January 23, 2018. Nuoroda tikrinta January 23, 2018. „Share of Overall Units—Marvel 38.30%, DC 33.93%; Share of Overall Dollars—Marvel 36.36%, DC 30.07%“
Miller, John. „2017 Comic Book Sales to Comics Shops“. Comichron. Suarchyvuotas originalas January 23, 2018. Nuoroda tikrinta January 23, 2018. „Share of Overall Units—Marvel 38.30%, DC 33.93%; Share of Overall Dollars—Marvel 36.36%, DC 30.07%“