Publishing, Rh Value.Farm journal's cooking and entertaining in America (англ.). — Greenwich House, 1983. — ISBN 978-0-517-41465-1.. — «Swedish fruit soup: The Scandinavians are famous for their fruit soups. In the summertime the cloudberry, which is shaped like the raspberry but is yellow in color, and the arctic raspberry are the fruits used to ...».
Williamson, Ruth Lundgren.MotorBoating (неопр.). Vol. 115, No. 396, 122. MotorBoating (март 1965). Дата обращения: 11 июня 2015.