Gaya APA
Introduction to Herpetology. (1971).
San Fransisco:
W.H Freeman and Company.
Gaya Chicago
Introduction to Herpetology.
.
San Fransisco:
W.H Freeman and Company,
1971.
Buku.
Gaya MLA
Introduction to Herpetology.
.
San Fransisco:
W.H Freeman and Company,
1971.
Buku.
Gaya Turabian
Introduction to Herpetology.
San Fransisco:
W.H Freeman and Company,
1971.
Buku.