"The African rainforest during the Last Glacial Maximum, an archipelago of forests in a sea of grass"; Wageningen: Wageningen University: ISBN 90-8504-037-X* (trade paperback edition)*Ndanga, Alfred Jean-Paul (2000) 'Réflexion sur une légende de Bayanga: le Mokele-mbembe', in "Zo", 3, 39-45.
"The African rainforest during the Last Glacial Maximum, an archipelago of forests in a sea of grass"; Wageningen: Wageningen University: ISBN 90-8504-037-X* Ley, Willie, "Exotic Zoology"; New York: Capricorn Books, 1966 (trade paperback edition)* Mackal, Roy P. "A Living Dinosaur?