Reynolds, C.S.
The ecology of freshwater phytoplankton
Cambridge University Press, 1993
 Buku Teks
Algal toxins in seafood and drinking water
edited by Ian R. Falconer
Academic Press, 1993
 Buku Teks
Comparing cultures
edited by Anthony Milner and Mary Quilty
Oxford University Press, 1997
 Buku Teks
Cultures in Canada
by Jack Bavington
Maclean-Hunter Learning Materials, 1976
 Buku Teks
Downs, James F.
Cultures in crisis
Glencoe Press, 1975
 Buku Teks