Boothroyd, J. (2011). How big? how heavy? how dense?: A look at matter.
Cita Chicago Style (17a ed.)Boothroyd, Jennifer. How Big? How Heavy? How Dense?: A Look at Matter. 2011.
Cita MLA (8a ed.)Boothroyd, Jennifer. How Big? How Heavy? How Dense?: A Look at Matter. 2011.
Precaución: Estas citas no son 100% exactas.