APA Style
National Geographic, National Geographic. (2015).
National Geographic; Februari 2016 (1).
Jakarta:
National Geographic.
Chicago Style
National Geographic, National Geographic.
National Geographic; Februari 2016.
1
Jakarta:
National Geographic,
2015.
.
MLA Style
National Geographic, National Geographic.
National Geographic; Februari 2016.
1
Jakarta:
National Geographic,
2015.
.
Turabian Style
National Geographic, National Geographic.
National Geographic; Februari 2016.
1
Jakarta:
National Geographic,
2015.
.