Gaya APA
Main Problems In American History. (1968).
Amerika:
The Dorsey Press.
Gaya Chicago
Main Problems In American History.
.
Amerika:
The Dorsey Press,
1968.
.
Gaya MLA
Main Problems In American History.
.
Amerika:
The Dorsey Press,
1968.
.
Gaya Turabian
Main Problems In American History.
Amerika:
The Dorsey Press,
1968.
.