Blackman A., Bottle S. E. & Schmid S. (2012). Chemistry. USA: Wiley.
Blackman Allan, Bottle Steven E and Schmid Siegbert. 2012. Chemistry. USA: Wiley.
Blackman A., Bottle S. E. and Schmid S. (2012). Chemistry. USA: Wiley.
Blackman Allan, Bottle Steven E and Schmid Siegbert. Chemistry. USA: Wiley. 2012.