Ross, S., & Biesty, S. (2011). Into the unknown: How great explorers found their way by land, sea, and air (1st U.S. ed.). Candlewick Press.
Cita Chicago Style (17a ed.)Ross, Stewart, y Stephen Biesty. Into the Unknown: How Great Explorers Found Their Way by Land, Sea, and Air. 1st U.S. ed. Somerville, Mass.: Candlewick Press, 2011.
Cita MLA (8a ed.)Ross, Stewart, y Stephen Biesty. Into the Unknown: How Great Explorers Found Their Way by Land, Sea, and Air. 1st U.S. ed. Candlewick Press, 2011.
Precaución: Estas citas no son 100% exactas.