Gaya APA
Mujizjughrafiyah Amerika. (1991).
[s.l.]:
[s.n.].
Gaya Chicago
Mujizjughrafiyah Amerika.
.
[s.l.]:
[s.n.],
1991.
Text.
Gaya MLA
Mujizjughrafiyah Amerika.
.
[s.l.]:
[s.n.],
1991.
Text.
Gaya Turabian
Mujizjughrafiyah Amerika.
[s.l.]:
[s.n.],
1991.
Print.