APA Style
Johns, Chris. (2013).
National Geographic: Our Greatest Journey (Vol 224 No.6 December 2013).
United States Of America:
National Geographic Society.
Chicago Style
Johns, Chris.
National Geographic: Our Greatest Journey.
Vol 224 No.6 December 2013
United States Of America:
National Geographic Society,
2013.
Text.
MLA Style
Johns, Chris.
National Geographic: Our Greatest Journey.
Vol 224 No.6 December 2013
United States Of America:
National Geographic Society,
2013.
Text.
Turabian Style
Johns, Chris.
National Geographic: Our Greatest Journey.
Vol 224 No.6 December 2013
United States Of America:
National Geographic Society,
2013.
Print.