Murphy, B. (2015). 81 days below zero: The incredible survival story of a World War II pilot in Alaska's frozen wilderness. Da Capo Press.
Cita Chicago Style (17a ed.)Murphy, Brian. 81 Days Below Zero: The Incredible Survival Story of a World War II Pilot in Alaska's Frozen Wilderness. Boston, MA: Da Capo Press, 2015.
Cita MLA (8a ed.)Murphy, Brian. 81 Days Below Zero: The Incredible Survival Story of a World War II Pilot in Alaska's Frozen Wilderness. Da Capo Press, 2015.
Precaución: Estas citas no son 100% exactas.