Janice VanCleave's Science around the world
VanCleave Janice PrattKniha
Citace v seznamu literatury:
VANCLEAVE, Janice Pratt. Janice VanCleave's Science around the world: activities on biomes from pole to pole. Hoboken, N.J.: Wiley, c2004. ISBN 0471205478. Dostupné také z: http://www.loc.gov/catdir/bios/wiley043/2004299313.html.