Gaya APA
Biologi of Amphibians. (1985).
New York:
Mc Graw-Hill.
Gaya Chicago
Biologi of Amphibians.
.
New York:
Mc Graw-Hill,
1985.
Buku.
Gaya MLA
Biologi of Amphibians.
.
New York:
Mc Graw-Hill,
1985.
Buku.
Gaya Turabian
Biologi of Amphibians.
New York:
Mc Graw-Hill,
1985.
Buku.