WGBH (Television station : Boston, Mass.), WGBH Educational Foundation, & Sawyer, F. (2009). Ten trillion and counting. WGBH Educational Foundation ; Distributed by PBS Home Video.
Cita Chicago Style (17a ed.)WGBH (Television station : Boston, Mass.), WGBH Educational Foundation, y Forrest Sawyer. Ten Trillion and Counting. Boston, Mass. : Alexandria, Va.: WGBH Educational Foundation ; Distributed by PBS Home Video, 2009.
Cita MLA (8a ed.)WGBH (Television station : Boston, Mass.), et al. Ten Trillion and Counting. WGBH Educational Foundation ; Distributed by PBS Home Video, 2009.
Precaución: Estas citas no son 100% exactas.