APA Style

Johns, Chris. (2013). National Geographic: This Baby Will Live to be 120* (Vol. 223 No. 5 May 2013). United State of America: National Geographic Society.

Chicago Style

Johns, Chris. National Geographic: This Baby Will Live to be 120*. Vol. 223 No. 5 May 2013 United State of America: National Geographic Society, 2013. Text.

MLA Style

Johns, Chris. National Geographic: This Baby Will Live to be 120*. Vol. 223 No. 5 May 2013 United State of America: National Geographic Society, 2013. Text.

Turabian Style

Johns, Chris. National Geographic: This Baby Will Live to be 120*. Vol. 223 No. 5 May 2013 United State of America: National Geographic Society, 2013. Print.