Boothroyd Jennifer. (2009). First Step Non Fiction What Is A Liquid. Lerner.
Chicago-čujuhus (17. p.)Boothroyd Jennifer. First Step Non Fiction What Is A Liquid. UK: Lerner, 2009.
MLA-čujuhus (9. p.)Boothroyd Jennifer. First Step Non Fiction What Is A Liquid. Lerner, 2009.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.