Gaya APA
Centuri of struggle. (1970).
New York:
Atheneum.
Gaya Chicago
Centuri of struggle.
cet.14.
New York:
Atheneum,
1970.
.
Gaya MLA
Centuri of struggle.
cet.14.
New York:
Atheneum,
1970.
.
Gaya Turabian
Centuri of struggle.
New York:
Atheneum,
1970.
.