Gaya APA
CURTIS, Helena. (1983).
Biology (FOURTH ED).
New York:
wadsworth publishing company.
Gaya Chicago
CURTIS, Helena.
Biology.
FOURTH ED
New York:
wadsworth publishing company,
1983.
FAKULTAS ILMU KESEHATAN.
Gaya MLA
CURTIS, Helena.
Biology.
FOURTH ED
New York:
wadsworth publishing company,
1983.
FAKULTAS ILMU KESEHATAN.
Gaya Turabian
CURTIS, Helena.
Biology.
FOURTH ED
New York:
wadsworth publishing company,
1983.
FAKULTAS ILMU KESEHATAN.