Johnson, D. (2006). Onward: A photobiography of African-American polar explorer Matthew Henson. National Geographic.
Cita Chicago Style (17a ed.)Johnson, Dolores. Onward: A Photobiography of African-American Polar Explorer Matthew Henson. Washington. D.C.: National Geographic, 2006.
Cita MLA (8a ed.)Johnson, Dolores. Onward: A Photobiography of African-American Polar Explorer Matthew Henson. National Geographic, 2006.
Precaución: Estas citas no son 100% exactas.