Gaya APA
HALL, Eugene J. (1981).
The empty sky .
New York:
Mc Graw Hill.
Gaya Chicago
HALL, Eugene J.
The empty sky.
New York:
Mc Graw Hill,
1981.
UMUM.
Gaya MLA
HALL, Eugene J.
The empty sky.
New York:
Mc Graw Hill,
1981.
UMUM.
Gaya Turabian
HALL, Eugene J.
The empty sky.
New York:
Mc Graw Hill,
1981.
UMUM.