APA Style
National Geographic History - 2021 May. (2021).
:
.
Chicago Style
National Geographic History - 2021 May.
e-magazine.
:
,
2021.
Text.
MLA Style
National Geographic History - 2021 May.
e-magazine.
:
,
2021.
Text.
Turabian Style
National Geographic History - 2021 May.
:
,
2021.
Print.