APA Style
National Geographic: Vol. 189-190, No. 1-6: January 1996-December 1996. ().
Washington, D.C.:
National Geographic Society.
Chicago Style
National Geographic: Vol. 189-190, No. 1-6: January 1996-December 1996.
.
Washington, D.C.:
National Geographic Society,
.
Text.
MLA Style
National Geographic: Vol. 189-190, No. 1-6: January 1996-December 1996.
.
Washington, D.C.:
National Geographic Society,
.
Text.
Turabian Style
National Geographic: Vol. 189-190, No. 1-6: January 1996-December 1996.
Washington, D.C.:
National Geographic Society,
.
Print.