Gaya APA
Parkman,Francis. (1964).
The Oregon Trail .
New York:
airmonts publishing company.
Gaya Chicago
Parkman,Francis.
The Oregon Trail.
New York:
airmonts publishing company,
1964.
Text.
Gaya MLA
Parkman,Francis.
The Oregon Trail.
New York:
airmonts publishing company,
1964.
Text.
Gaya Turabian
Parkman,Francis.
The Oregon Trail.
New York:
airmonts publishing company,
1964.
Print.