Gaya APA
The Earth (Social Studies). ().
:
State&National Standards.
Gaya Chicago
The Earth (Social Studies).
.
:
State&National Standards,
.
.
Gaya MLA
The Earth (Social Studies).
.
:
State&National Standards,
.
.
Gaya Turabian
The Earth (Social Studies).
:
State&National Standards,
.
.