Forlaget Forlæns.

–In Danish (transl. from 2018 Dutch edition; original title: Rivieren: een reis langs zeeën, meren en rivieren, Lannoo Publishers.). Children's book, illustrated with drawings of rivers, seas, and their inhabitants. P. 60: {"The West African manatee is found in coastal seas, rivers and lakes. Manatees (sea cows) were in earlier times often regarded to be mermaids."}