Gaya APA
Ornitology an Ecological Approach. (1988).
New Jersey:
Prentice Hall.
Gaya Chicago
Ornitology an Ecological Approach.
.
New Jersey:
Prentice Hall,
1988.
Buku.
Gaya MLA
Ornitology an Ecological Approach.
.
New Jersey:
Prentice Hall,
1988.
Buku.
Gaya Turabian
Ornitology an Ecological Approach.
New Jersey:
Prentice Hall,
1988.
Buku.