Bush, David M.; Neal, William J.; Longo, Norma J.; Lindeman, Kenyon C.; Pilkey, Deborah F.; Esteves, Luciana S.; Congleton, John Duke University Press 2004 Kovakantinen kirja
Bush, David M.; Neal, William J.; Longo, Norma J.; Lindeman, Kenyon C.; Pilkey, Deborah F.; Esteves, Luciana S.; Congleton, John Duke University Press 2004 Pehmeäkantinen kirja