"An industry of the mind". Hispanic Engineer & Information Technology. 8 (1). Career Communications Group: 24. Spring 1992. ISSN1088-3452. Retrieved 2011-08-05.
Hillier, Jim (1992). The New Hollywood. Continuum. p. 32. ISBN978-0-8264-0638-5. Bart vs. The Space Mutants, has sold over one million copies at $40 each
"An industry of the mind". Hispanic Engineer & Information Technology. 8 (1). Career Communications Group: 24. Spring 1992. ISSN1088-3452. Retrieved 2011-08-05.