Yoder, Susan
The wisdom of dolphins
Source Books, 2000
 Buku Teks
Whale sound : an anthology of poems about whales and dolphins
edited by Greg Gatenby
J.J. Douglas, 1977
 Buku Teks
Hamilton, Mark
The Book
Neo-tech books, 2000
 Buku Teks
Handbook of marine mammals; Volume 4, river dolphins and the larger toothed whales
edited by Sam H. Ridgway and Richard J. Harrison
Academic Press, 1989
 Buku Referensi
The Urantia Book
Chicago Urantia Foundation 1995,
 Buku Teks