Gaya APA
Helvarg, David.. (2005).
The Ocean and coastal conservation guide : the blue movement directory 2005-2006 / editor: David Helvarg .
Washinto:
Island Press.
Gaya Chicago
Helvarg, David..
The Ocean and coastal conservation guide : the blue movement directory 2005-2006 / editor: David Helvarg.
Washinto:
Island Press,
2005.
Buku.
Gaya MLA
Helvarg, David..
The Ocean and coastal conservation guide : the blue movement directory 2005-2006 / editor: David Helvarg.
Washinto:
Island Press,
2005.
Buku.
Gaya Turabian
Helvarg, David..
The Ocean and coastal conservation guide : the blue movement directory 2005-2006 / editor: David Helvarg.
Washinto:
Island Press,
2005.
Buku.